aboutsummaryrefslogblamecommitdiffhomepage
path: root/web/html.html
blob: da6adec89904755b26f56a12c52f804427927802 (plain) (tree)
1
2
3
4
5
6
7
8
9
               
                                        



                                            

 
                                 
        

                                                                            
                                                   






                                                                     
 


                                                                          
 





                                                            
 
           
                                        
                             
                                                
                




                                                                                                             
                














                                                                                                 
                



                                                                                 

                                          


                                                      

                 

                                                                         
                                                             
                
                                                      
                               
                                                                                  


                                                                                      

                                   
             


                                                           



                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                  


                                                                          

              





















                                                                                                               


                                                    
                                                                           
                                                           
                                              
                                                                                                                                                                                                  
                                                      
                                



                                                                                                                                                                                                         
                                                                                                                


















                                                                                                                                                                                                                       
 












                                                                                                                                                                                            
 
                                                                                                                   
                        






































                                                                                                                   

                             

                                                     
                          



                                                      






                                                                                                 


            



























                                                                                       





                                                                             

                 
                        

                                                      
                        

                                                      
                        




                                                      



                                                                                  
                                                                        
                          
                                 

       
                                                       


                          

                                                          
      

                                                          



               

                                                          
 
                                                              


                                                 
                                                             


                                     
                                                                                                       
                                                                                                                      




























                                                                            
                                             































                                                                                              












































































                                                                                                                               





























































































                                                                                                                                     
                                                                                                               






                                    







                                                                                                                                                                                        
 
                                                                                                                                                                                    

                                                                 
 








                                                                                                                                                                         
 
                                                                                                                                                                     





                                                         



                

                                              








                                                     

                                  

 
          

           
<!DOCTYPE HTML>
<html lang="en" class="light" dir="ltr">
    <head>
        <!-- Book generated using mdBook -->
        <meta charset="UTF-8">
        <title>html - Notes</title>


        <!-- Custom HTML head -->
        
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta name="theme-color" content="#ffffff">

        <link rel="icon" href="../favicon.svg">
        <link rel="shortcut icon" href="../favicon.png">
        <link rel="stylesheet" href="../css/variables.css">
        <link rel="stylesheet" href="../css/general.css">
        <link rel="stylesheet" href="../css/chrome.css">
        <link rel="stylesheet" href="../css/print.css" media="print">

        <!-- Fonts -->
        <link rel="stylesheet" href="../FontAwesome/css/font-awesome.css">
        <link rel="stylesheet" href="../fonts/fonts.css">

        <!-- Highlight.js Stylesheets -->
        <link rel="stylesheet" href="../highlight.css">
        <link rel="stylesheet" href="../tomorrow-night.css">
        <link rel="stylesheet" href="../ayu-highlight.css">

        <!-- Custom theme stylesheets -->

    </head>
    <body class="sidebar-visible no-js">
    <div id="body-container">
        <!-- Provide site root to javascript -->
        <script>
            var path_to_root = "../";
            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
        </script>

        <!-- Work around some values being stored in localStorage wrapped in quotes -->
        <script>
            try {
                var theme = localStorage.getItem('mdbook-theme');
                var sidebar = localStorage.getItem('mdbook-sidebar');

                if (theme.startsWith('"') && theme.endsWith('"')) {
                    localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
                }

                if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
                    localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
                }
            } catch (e) { }
        </script>

        <!-- Set the theme before any content is loaded, prevents flash -->
        <script>
            var theme;
            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
            if (theme === null || theme === undefined) { theme = default_theme; }
            var html = document.querySelector('html');
            html.classList.remove('light')
            html.classList.add(theme);
            var body = document.querySelector('body');
            body.classList.remove('no-js')
            body.classList.add('js');
        </script>

        <input type="checkbox" id="sidebar-toggle-anchor" class="hidden">

        <!-- Hide / unhide sidebar before it is displayed -->
        <script>
            var body = document.querySelector('body');
            var sidebar = null;
            var sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
            if (document.body.clientWidth >= 1080) {
                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
                sidebar = sidebar || 'visible';
            } else {
                sidebar = 'hidden';
            }
            sidebar_toggle.checked = sidebar === 'visible';
            body.classList.remove('sidebar-visible');
            body.classList.add("sidebar-" + sidebar);
        </script>

        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
            <div class="sidebar-scrollbox">
                <ol class="chapter"><li class="chapter-item expanded affix "><a href="../intro.html">Introduction</a></li><li class="chapter-item expanded "><a href="../shells/index.html"><strong aria-hidden="true">1.</strong> Shells</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../shells/zsh.html"><strong aria-hidden="true">1.1.</strong> zsh</a></li><li class="chapter-item expanded "><a href="../shells/bash.html"><strong aria-hidden="true">1.2.</strong> bash</a></li><li class="chapter-item expanded "><a href="../shells/fish.html"><strong aria-hidden="true">1.3.</strong> fish</a></li></ol></li><li class="chapter-item expanded "><a href="../cli/index.html"><strong aria-hidden="true">2.</strong> CLI foo</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../cli/awk.html"><strong aria-hidden="true">2.1.</strong> awk</a></li><li class="chapter-item expanded "><a href="../cli/sed.html"><strong aria-hidden="true">2.2.</strong> sed</a></li><li class="chapter-item expanded "><a href="../cli/column.html"><strong aria-hidden="true">2.3.</strong> column</a></li><li class="chapter-item expanded "><a href="../cli/sort.html"><strong aria-hidden="true">2.4.</strong> sort</a></li><li class="chapter-item expanded "><a href="../cli/tr.html"><strong aria-hidden="true">2.5.</strong> tr</a></li><li class="chapter-item expanded "><a href="../cli/tac.html"><strong aria-hidden="true">2.6.</strong> tac</a></li><li class="chapter-item expanded "><a href="../cli/paste.html"><strong aria-hidden="true">2.7.</strong> paste</a></li></ol></li><li class="chapter-item expanded "><a href="../tools/index.html"><strong aria-hidden="true">3.</strong> Tools</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../tools/tmux.html"><strong aria-hidden="true">3.1.</strong> tmux</a></li><li class="chapter-item expanded "><a href="../tools/screen.html"><strong aria-hidden="true">3.2.</strong> screen</a></li><li class="chapter-item expanded "><a href="../tools/emacs.html"><strong aria-hidden="true">3.3.</strong> emacs</a></li><li class="chapter-item expanded "><a href="../tools/gpg.html"><strong aria-hidden="true">3.4.</strong> gpg</a></li><li class="chapter-item expanded "><a href="../tools/radare2.html"><strong aria-hidden="true">3.5.</strong> radare2</a></li><li class="chapter-item expanded "><a href="../tools/qemu.html"><strong aria-hidden="true">3.6.</strong> qemu</a></li><li class="chapter-item expanded "><a href="../tools/pacman.html"><strong aria-hidden="true">3.7.</strong> pacman</a></li><li class="chapter-item expanded "><a href="../tools/dot.html"><strong aria-hidden="true">3.8.</strong> dot</a></li><li class="chapter-item expanded "><a href="../tools/ffmpeg.html"><strong aria-hidden="true">3.9.</strong> ffmpeg</a></li><li class="chapter-item expanded "><a href="../tools/gnuplot.html"><strong aria-hidden="true">3.10.</strong> gnuplot</a></li><li class="chapter-item expanded "><a href="../tools/restic.html"><strong aria-hidden="true">3.11.</strong> restic</a></li><li class="chapter-item expanded "><a href="../tools/qrencode.html"><strong aria-hidden="true">3.12.</strong> qrencode</a></li></ol></li><li class="chapter-item expanded "><a href="../process/index.html"><strong aria-hidden="true">4.</strong> Process management & inspection</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../process/lsof.html"><strong aria-hidden="true">4.1.</strong> lsof</a></li><li class="chapter-item expanded "><a href="../process/pidstat.html"><strong aria-hidden="true">4.2.</strong> pidstat</a></li><li class="chapter-item expanded "><a href="../process/pgrep.html"><strong aria-hidden="true">4.3.</strong> pgrep</a></li><li class="chapter-item expanded "><a href="../process/ps.html"><strong aria-hidden="true">4.4.</strong> ps</a></li><li class="chapter-item expanded "><a href="../process/pmap.html"><strong aria-hidden="true">4.5.</strong> pmap</a></li><li class="chapter-item expanded "><a href="../process/pstack.html"><strong aria-hidden="true">4.6.</strong> pstack</a></li><li class="chapter-item expanded "><a href="../process/taskset.html"><strong aria-hidden="true">4.7.</strong> taskset</a></li><li class="chapter-item expanded "><a href="../process/nice.html"><strong aria-hidden="true">4.8.</strong> nice</a></li></ol></li><li class="chapter-item expanded "><a href="../trace_profile/index.html"><strong aria-hidden="true">5.</strong> Trace and Profile</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../trace_profile/time.html"><strong aria-hidden="true">5.1.</strong> time</a></li><li class="chapter-item expanded "><a href="../trace_profile/strace.html"><strong aria-hidden="true">5.2.</strong> strace</a></li><li class="chapter-item expanded "><a href="../trace_profile/ltrace.html"><strong aria-hidden="true">5.3.</strong> ltrace</a></li><li class="chapter-item expanded "><a href="../trace_profile/perf.html"><strong aria-hidden="true">5.4.</strong> perf</a></li><li class="chapter-item expanded "><a href="../trace_profile/oprofile.html"><strong aria-hidden="true">5.5.</strong> OProfile</a></li><li class="chapter-item expanded "><a href="../trace_profile/callgrind.html"><strong aria-hidden="true">5.6.</strong> callgrind</a></li><li class="chapter-item expanded "><a href="../trace_profile/valgrind.html"><strong aria-hidden="true">5.7.</strong> valgrind</a></li></ol></li><li class="chapter-item expanded "><a href="../debug/index.html"><strong aria-hidden="true">6.</strong> Debug</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../debug/gdb.html"><strong aria-hidden="true">6.1.</strong> gdb</a></li><li class="chapter-item expanded "><a href="../debug/gdbserver.html"><strong aria-hidden="true">6.2.</strong> gdbserver</a></li></ol></li><li class="chapter-item expanded "><a href="../binary/index.html"><strong aria-hidden="true">7.</strong> Binary</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../binary/od.html"><strong aria-hidden="true">7.1.</strong> od</a></li><li class="chapter-item expanded "><a href="../binary/xxd.html"><strong aria-hidden="true">7.2.</strong> xxd</a></li><li class="chapter-item expanded "><a href="../binary/readelf.html"><strong aria-hidden="true">7.3.</strong> readelf</a></li><li class="chapter-item expanded "><a href="../binary/objdump.html"><strong aria-hidden="true">7.4.</strong> objdump</a></li><li class="chapter-item expanded "><a href="../binary/nm.html"><strong aria-hidden="true">7.5.</strong> nm</a></li></ol></li><li class="chapter-item expanded "><a href="../development/index.html"><strong aria-hidden="true">8.</strong> Development</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../development/c++filt.html"><strong aria-hidden="true">8.1.</strong> c++filt</a></li><li class="chapter-item expanded "><a href="../development/c++.html"><strong aria-hidden="true">8.2.</strong> c++</a></li><li class="chapter-item expanded "><a href="../development/glibc.html"><strong aria-hidden="true">8.3.</strong> glibc</a></li><li class="chapter-item expanded "><a href="../development/gcc.html"><strong aria-hidden="true">8.4.</strong> gcc</a></li><li class="chapter-item expanded "><a href="../development/git.html"><strong aria-hidden="true">8.5.</strong> git</a></li><li class="chapter-item expanded "><a href="../development/cmake.html"><strong aria-hidden="true">8.6.</strong> cmake</a></li><li class="chapter-item expanded "><a href="../development/make.html"><strong aria-hidden="true">8.7.</strong> make</a></li><li class="chapter-item expanded "><a href="../development/ld.so.html"><strong aria-hidden="true">8.8.</strong> ld.so</a></li><li class="chapter-item expanded "><a href="../development/symbolver.html"><strong aria-hidden="true">8.9.</strong> symbol versioning</a></li><li class="chapter-item expanded "><a href="../development/python.html"><strong aria-hidden="true">8.10.</strong> python</a></li><li class="chapter-item expanded "><a href="../development/gcov.html"><strong aria-hidden="true">8.11.</strong> gcov</a></li><li class="chapter-item expanded "><a href="../development/pgo.html"><strong aria-hidden="true">8.12.</strong> pgo</a></li></ol></li><li class="chapter-item expanded "><a href="../linux/index.html"><strong aria-hidden="true">9.</strong> Linux</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../linux/systemd.html"><strong aria-hidden="true">9.1.</strong> systemd</a></li><li class="chapter-item expanded "><a href="../linux/coredump.html"><strong aria-hidden="true">9.2.</strong> coredump</a></li><li class="chapter-item expanded "><a href="../linux/ptrace_scope.html"><strong aria-hidden="true">9.3.</strong> ptrace_scope</a></li><li class="chapter-item expanded "><a href="../linux/cryptsetup.html"><strong aria-hidden="true">9.4.</strong> cryptsetup</a></li><li class="chapter-item expanded "><a href="../linux/swap.html"><strong aria-hidden="true">9.5.</strong> swap</a></li><li class="chapter-item expanded "><a href="../linux/input.html"><strong aria-hidden="true">9.6.</strong> input</a></li><li class="chapter-item expanded "><a href="../linux/acl.html"><strong aria-hidden="true">9.7.</strong> acl</a></li><li class="chapter-item expanded "><a href="../linux/zfs.html"><strong aria-hidden="true">9.8.</strong> zfs</a></li><li class="chapter-item expanded "><a href="../linux/cpufreq.html"><strong aria-hidden="true">9.9.</strong> cpufreq</a></li><li class="chapter-item expanded "><a href="../linux/cups.html"><strong aria-hidden="true">9.10.</strong> cups</a></li></ol></li><li class="chapter-item expanded "><a href="../network/index.html"><strong aria-hidden="true">10.</strong> Network</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../network/ssh.html"><strong aria-hidden="true">10.1.</strong> ssh</a></li><li class="chapter-item expanded "><a href="../network/ss.html"><strong aria-hidden="true">10.2.</strong> ss</a></li><li class="chapter-item expanded "><a href="../network/tcpdump.html"><strong aria-hidden="true">10.3.</strong> tcpdump</a></li><li class="chapter-item expanded "><a href="../network/tshark.html"><strong aria-hidden="true">10.4.</strong> tshark</a></li><li class="chapter-item expanded "><a href="../network/firewall-cmd.html"><strong aria-hidden="true">10.5.</strong> firewall-cmd</a></li><li class="chapter-item expanded "><a href="../network/nftables.html"><strong aria-hidden="true">10.6.</strong> nftables</a></li></ol></li><li class="chapter-item expanded "><a href="../web/index.html"><strong aria-hidden="true">11.</strong> Web</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../web/html.html" class="active"><strong aria-hidden="true">11.1.</strong> html</a></li><li class="chapter-item expanded "><a href="../web/css.html"><strong aria-hidden="true">11.2.</strong> css</a></li><li class="chapter-item expanded "><a href="../web/chartjs.html"><strong aria-hidden="true">11.3.</strong> chartjs</a></li><li class="chapter-item expanded "><a href="../web/plotly.html"><strong aria-hidden="true">11.4.</strong> plotly</a></li></ol></li><li class="chapter-item expanded "><a href="../arch/index.html"><strong aria-hidden="true">12.</strong> Arch</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../arch/x86_64.html"><strong aria-hidden="true">12.1.</strong> x86_64</a></li><li class="chapter-item expanded "><a href="../arch/armv8.html"><strong aria-hidden="true">12.2.</strong> armv8</a></li><li class="chapter-item expanded "><a href="../arch/arm64.html"><strong aria-hidden="true">12.3.</strong> arm64</a></li><li class="chapter-item expanded "><a href="../arch/armv7.html"><strong aria-hidden="true">12.4.</strong> armv7</a></li><li class="chapter-item expanded "><a href="../arch/riscv.html"><strong aria-hidden="true">12.5.</strong> riscv</a></li></ol></li></ol>
            </div>
            <div id="sidebar-resize-handle" class="sidebar-resize-handle">
                <div class="sidebar-resize-indicator"></div>
            </div>
        </nav>

        <!-- Track and set sidebar scroll position -->
        <script>
            var sidebarScrollbox = document.querySelector('#sidebar .sidebar-scrollbox');
            sidebarScrollbox.addEventListener('click', function(e) {
                if (e.target.tagName === 'A') {
                    sessionStorage.setItem('sidebar-scroll', sidebarScrollbox.scrollTop);
                }
            }, { passive: true });
            var sidebarScrollTop = sessionStorage.getItem('sidebar-scroll');
            sessionStorage.removeItem('sidebar-scroll');
            if (sidebarScrollTop) {
                // preserve sidebar scroll position when navigating via links within sidebar
                sidebarScrollbox.scrollTop = sidebarScrollTop;
            } else {
                // scroll sidebar to current active section when navigating via "next/previous chapter" buttons
                var activeSection = document.querySelector('#sidebar .active');
                if (activeSection) {
                    activeSection.scrollIntoView({ block: 'center' });
                }
            }
        </script>

        <div id="page-wrapper" class="page-wrapper">

            <div class="page">
                                <div id="menu-bar-hover-placeholder"></div>
                <div id="menu-bar" class="menu-bar sticky">
                    <div class="left-buttons">
                        <label id="sidebar-toggle" class="icon-button" for="sidebar-toggle-anchor" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
                            <i class="fa fa-bars"></i>
                        </label>
                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
                            <i class="fa fa-paint-brush"></i>
                        </button>
                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
                            <li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
                        </ul>
                        <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                            <i class="fa fa-search"></i>
                        </button>
                    </div>

                    <h1 class="menu-title">Notes</h1>

                    <div class="right-buttons">
                        <a href="../print.html" title="Print this book" aria-label="Print this book">
                            <i id="print-button" class="fa fa-print"></i>
                        </a>
                        <a href="https://github.com/johannst/notes" title="Git repository" aria-label="Git repository">
                            <i id="git-repository-button" class="fa fa-github"></i>
                        </a>

                    </div>
                </div>

                <div id="search-wrapper" class="hidden">
                    <form id="searchbar-outer" class="searchbar-outer">
                        <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
                    </form>
                    <div id="searchresults-outer" class="searchresults-outer hidden">
                        <div id="searchresults-header" class="searchresults-header"></div>
                        <ul id="searchresults">
                        </ul>
                    </div>
                </div>

                <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
                <script>
                    document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
                    document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
                    });
                </script>

                <div id="content" class="content">
                    <main>
                        <h1 id="html"><a class="header" href="#html">html</a></h1>
<h2 id="collapsible-element"><a class="header" href="#collapsible-element">Collapsible element</a></h2>
<p><a href="src/details.html">Rendered html</a></p>
<pre><code class="language-html">&lt;details&gt;
  &lt;summary&gt;Some text goes here&lt;/summary&gt;
  ... some more text goes here.
&lt;/details&gt;
</code></pre>
<blockquote>
<p>With the <code>open</code> attribute <code>&lt;details open&gt;</code> the details are unfolded by default.</p>
</blockquote>
<h1 id="minimal-2-column-layout"><a class="header" href="#minimal-2-column-layout">Minimal 2 column layout</a></h1>
<p><a href="src/grid-2col.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.grid-2col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1em
}
.col1 {
  grid-column-start: 1;
  background-color: red;
  padding-left: 1em;
}
.col2 {
  grid-column-start: 2;
  background-color: green;
  padding-left: 1em;
}
&lt;/style&gt;
&lt;div class="grid-2col"&gt;
  &lt;div class="col1"&gt;
    &lt;p&gt;Some text in the first column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="col2"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-grid-area"><a class="header" href="#minimal-grid-area">Minimal grid area</a></h1>
<p><a href="src/grid-area.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.page-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  grid-template-areas:
      "h h"
      "s m"
      "f f";
  gap: 1em;
}
.gh {
  grid-area: h;
  background-color: orange;
}
.gs {
  grid-area: s;
  background-color: green;
}
.gm {
  grid-area: m;
  background-color: gray;
}
.gf {
  grid-area: f;
  background-color: yellow;
}
.nav-items {
  display: flex;                  /* flexbox model =&gt; flexible layout on row */
  justify-content: space-around;  /* align flex boxes horizontally with space around */
  align-items: center;            /* center flex items vertically */
  list-style: none;
}
p {
  margin: 1em;
}
&lt;/style&gt;
&lt;div class="page-grid"&gt;
  &lt;div class="gh"&gt;
      &lt;ul class="nav-items"&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;aa&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;bb&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;cc&lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="gs"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gm"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gf"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;

</code></pre>
<h1 id="minimal-tabs"><a class="header" href="#minimal-tabs">Minimal tabs</a></h1>
<p><a href="src/tabs.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
const showTab = (E, T) =&gt; {
    const TABS = Array.from(document.getElementsByClassName("content"));
    TABS.forEach(T =&gt; {
        T.style.display = "none";
    });

    document.getElementById(T).style.display = "block";
};

window.onload = () =&gt; {
    document.getElementById("bTab1").onclick = (E) =&gt; {
        showTab(E, "tTab1");
    };
    document.getElementById("bTab2").onclick = (E) =&gt; {
        showTab(E, "tTab2");
    };
}
&lt;/script&gt;

&lt;button type="button" id="bTab1"&gt;Tab1&lt;/button&gt;
&lt;button type="button" id="bTab2"&gt;Tab2&lt;/button&gt;

&lt;div id="tTab1" class="content" style="display: block;"&gt;
    &lt;p&gt;Some content goes here ...&lt;/p&gt;
&lt;/div&gt;

&lt;div id="tTab2" class="content" style="display: none;"&gt;
    &lt;p&gt;... and there.&lt;/p&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-tags-filter"><a class="header" href="#minimal-tags-filter">Minimal tags filter</a></h1>
<h2 id="single-active-filter-tag"><a class="header" href="#single-active-filter-tag">Single active filter tag</a></h2>
<p><a href="src/tags.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
/// Map HTML elements to display kinds.
const elementToDisplay = (E) =&gt; {
    switch (E.nodeName) {
        case "LI":
            return "list-item";
        default:
            return "block";
    }
}

/// Display only elements with tag T.
const showTag = (T) =&gt; {
    Array.from(document.getElementsByClassName("content")).forEach(E =&gt; {
        E.style.display = "none";
    });

    Array.from(document.getElementsByClassName(T)).forEach(E =&gt; {
        E.style.display = elementToDisplay(E);
    });
};

/// Initialize buttons and callbacks.
window.onload = () =&gt; {
    // Handle to the filter placeholder.
    const filter = document.getElementById("filter");

    // Create buttons for each tag T.
    ["arm", "x86", "clear"].forEach(T =&gt; {
        const btn = document.createElement("button");
        btn.innerHTML = T;
        btn.onclick = T === "clear"
            ? (E) =&gt; {
                showTag("content");
                filter.innerHTML = "";
            }
            : (E) =&gt; {
                showTag(T);
                filter.innerHTML = `&lt;p&gt;filter: &lt;mark&gt;${T}&lt;/mark&gt;&lt;/p&gt;`;
            };

        document.body.prepend(btn);
    });
}
&lt;/script&gt;

&lt;div id = "filter"&gt;&lt;/div&gt;

&lt;ul&gt;
    &lt;li class = "content arm"&gt;arm 1&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 2&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 3&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 1&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 2&lt;/li&gt;
    &lt;li class = "content x86 arm"&gt;x86 + arm&lt;/li&gt;
&lt;/ul&gt;

&lt;div class = "content arm"&gt;arm&lt;/div&gt;
&lt;div class = "content arm x86"&gt;arm x86&lt;/div&gt;
&lt;div class = "content x86"&gt;x86&lt;/div&gt;
</code></pre>
<h2 id="multiple-active-filter-tags"><a class="header" href="#multiple-active-filter-tags">Multiple active filter tags</a></h2>
<p><a href="src/tags2.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
/// Map HTML elements to display kinds.
const elementToDisplay = (E) =&gt; {
    switch (E.nodeName) {
        case "LI":
            return "list-item";
        default:
            return "block";
    }
}

/// Display only elements which have all TAGS.
const showTag = (TAGS) =&gt; {
    Array.from(document.getElementsByClassName("content")).forEach(E =&gt; {
        // Display the element, iff the element contains every tag T in TAGS.
        if (TAGS.every(T =&gt; Array.from(E.classList).includes(T))) {
            E.style.display = elementToDisplay(E);
        } else {
            E.style.display = "none";
        }
    });
};

/// Initialize buttons and callbacks.
window.onload = () =&gt; {
    // Handle to the filter placeholder.
    const filter_node = document.getElementById("filter");
    // Active filter tags.
    const filter = Array();

    // Create buttons for each tag T.
    ["arm", "x86", "clear"].forEach(T =&gt; {
        const btn = document.createElement("button");
        btn.innerHTML = T;
        btn.onclick = T === "clear"
            ? (E) =&gt; {
                // Clear active filter.
                while (filter.length) { filter.pop(); }

                showTag(["content"]);
                filter_node.innerHTML = "&lt;p&gt;filter:&lt;/p&gt;";
            }
            : (E) =&gt; {
                // Toggle tag T in Active filter.
                if ((idx = filter.indexOf(T)) &gt; -1) {
                    filter.splice(idx, 1);
                } else {
                    filter.push(T);
                }

                showTag(filter);
                out = filter.map(T =&gt; `&lt;mark&gt;${T}&lt;/mark&gt;`).join(" + ");
                filter_node.innerHTML = `&lt;p&gt;filter: ${out}&lt;/p&gt;`;
            };

        document.body.prepend(btn);
    });
}
&lt;/script&gt;

&lt;div id = "filter"&gt;&lt;p&gt;filter:&lt;/p&gt;&lt;/div&gt;

&lt;ul&gt;
    &lt;li class = "content arm"&gt;arm 1&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 2&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 3&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 1&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 2&lt;/li&gt;
    &lt;li class = "content x86 arm"&gt;x86 + arm&lt;/li&gt;
&lt;/ul&gt;

&lt;div class = "content arm"&gt;arm&lt;/div&gt;
&lt;div class = "content arm x86"&gt;arm x86&lt;/div&gt;
&lt;div class = "content x86"&gt;x86&lt;/div&gt;
</code></pre>
<h1 id="floating-figures-with-caption"><a class="header" href="#floating-figures-with-caption">Floating figures with caption</a></h1>
<p><a href="src/figure.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
img {
    width: 100%;
    height: auto;
}
figure {
    width: 20%;
}
&lt;/style&gt;

&lt;!-- EXAMPLE 1 ----------------------------------------------------------------&gt;

&lt;figure style="float: left;"&gt;
    &lt;img src="grad.png"&gt;
    &lt;figcaption&gt;Fig 1: wow such colors&lt;/figcaption&gt;
&lt;/figure&gt;

&lt;p&gt;&lt;i&gt;
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua. Nunc lobortis mattis aliquam
faucibus. A iaculis at erat pellentesque adipiscing. Dolor morbi non arcu risus
quis varius quam quisque. Fermentum odio eu feugiat pretium. Nibh nisl
condimentum id venenatis. Gravida dictum fusce ut placerat orci nulla. Pulvinar
etiam non quam lacus suspendisse faucibus interdum posuere. Pulvinar
pellentesque habitant morbi tristique senectus et netus et malesuada. Sem
fringilla ut morbi tincidunt augue interdum. Consectetur purus ut faucibus
pulvinar elementum. Dui faucibus in ornare quam. Sodales ut etiam sit amet
nisl. Nunc scelerisque viverra mauris in aliquam. Nec sagittis aliquam
malesuada bibendum arcu vitae elementum curabitur.
&lt;/i&gt;&lt;/p&gt;

&lt;figure style="float: right;"&gt;
    &lt;img src="grad.png"&gt;
    &lt;figcaption&gt;Fig 2: wow such colors again&lt;/figcaption&gt;
&lt;/figure&gt;

&lt;p&gt;&lt;i&gt;
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua. Nunc lobortis mattis aliquam
faucibus. A iaculis at erat pellentesque adipiscing. Dolor morbi non arcu risus
quis varius quam quisque. Fermentum odio eu feugiat pretium. Nibh nisl
condimentum id venenatis.
&lt;/i&gt;&lt;/p&gt;

&lt;!-- EXAMPLE 2 ----------------------------------------------------------------&gt;

&lt;hr style="clear: both"&gt;

&lt;figure style="float: left;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;

Floats can be next to each other on the same height.

&lt;figure style="float: right;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;

&lt;!-- EXAMPLE 3 ----------------------------------------------------------------&gt;

&lt;hr style="clear: both"&gt;

&lt;figure style="float: left;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;

The css property &lt;code&gt;clear: {left, right, both};&lt;/code&gt; controls how elements
should be handled relative to the previous floating element.

&lt;figure style="float: right; clear: left;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;

&lt;p&gt;&lt;i&gt;
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua. Nunc lobortis mattis aliquam
faucibus. A iaculis at erat pellentesque adipiscing. Dolor morbi non arcu risus
quis varius quam quisque. Fermentum odio eu feugiat pretium. Nibh nisl
condimentum id venenatis. Gravida dictum fusce ut placerat orci nulla. Pulvinar
etiam non quam lacus suspendisse faucibus interdum posuere.
&lt;/i&gt;&lt;/p&gt;

&lt;!-- EXAMPLE 4 ----------------------------------------------------------------&gt;

&lt;hr style="clear: both"&gt;

&lt;div style="overflow: auto; border: 2px solid red;"&gt;
&lt;figure style="float: left;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;
&lt;code&gt;overflow: auto&lt;/code&gt; gives an alternative to &lt;code&gt;clear&lt;/code&gt; to
control placement of the floats. The red boarder visualizes the size of the
&lt;code&gt;&amp;ltdiv&amp;gt&lt;/code&gt; block. One can remove the &lt;code&gt;overflow&lt;/code&gt; property
and observe how the border changes.
&lt;/div&gt;

&lt;figure style="float: right;"&gt;
    &lt;img src="grad.png"&gt;
&lt;/figure&gt;
</code></pre>

                    </main>

                    <nav class="nav-wrapper" aria-label="Page navigation">
                        <!-- Mobile navigation buttons -->
                            <a rel="prev" href="../web/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
                                <i class="fa fa-angle-left"></i>
                            </a>

                            <a rel="next prefetch" href="../web/css.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
                                <i class="fa fa-angle-right"></i>
                            </a>

                        <div style="clear: both"></div>
                    </nav>
                </div>
            </div>

            <nav class="nav-wide-wrapper" aria-label="Page navigation">
                    <a rel="prev" href="../web/index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
                        <i class="fa fa-angle-left"></i>
                    </a>

                    <a rel="next prefetch" href="../web/css.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
                        <i class="fa fa-angle-right"></i>
                    </a>
            </nav>

        </div>




        <script>
            window.playground_copyable = true;
        </script>


        <script src="../elasticlunr.min.js"></script>
        <script src="../mark.min.js"></script>
        <script src="../searcher.js"></script>

        <script src="../clipboard.min.js"></script>
        <script src="../highlight.js"></script>
        <script src="../book.js"></script>

        <!-- Custom JS scripts -->


    </div>
    </body>
</html>