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| Demos of HTML document features | ||
| =============================== | ||
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| Try online: | ||
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| - “[JavaScript-enhanced footnotes and references](http://rauschma.github.com/html_demos/footnotes.html)” | ||
| - “[Numbering headings](http://rauschma.github.com/html_demos/numbering-headings.html)” |
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| <!doctype html> | ||
| <html> | ||
| <head> | ||
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | ||
| <title>Numbering headings</title> | ||
| <style> | ||
| /* Switch numbering on by adding class "countheads" to h1 */ | ||
| /* Prevent numbering for a single heading via class "nocount" */ | ||
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| body { | ||
| counter-reset: h2counter; | ||
| } | ||
| h1 { | ||
| counter-reset: h2counter; | ||
| } | ||
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| .countheads ~ h2:before { | ||
| content: counter(h2counter) ".\0000a0\0000a0"; | ||
| counter-increment: h2counter; | ||
| } | ||
| h2.nocount:before { | ||
| content: none; | ||
| counter-increment: none; | ||
| } | ||
| h2 { | ||
| counter-reset: h3counter; | ||
| } | ||
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| .countheads ~ h3:before { | ||
| content: counter(h2counter) "." counter(h3counter) ".\0000a0\0000a0"; | ||
| counter-increment: h3counter; | ||
| } | ||
| h3.nocount:before { | ||
| content: none; | ||
| counter-increment: none; | ||
| } | ||
| </style> | ||
| </head> | ||
| <body> | ||
| <h1 class="countheads">Numbering headings</h1> | ||
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| <h2>About</h2> | ||
| <ul> | ||
| <li>Companion blog post: “<a href="http://www.2ality.com/2012/01/numbering-headings.html">Automatically numbering headings via CSS</a>”</li> | ||
| <li>Project <a href="https://github.com/rauschma/html_demos">html_demos</a> on GitHub</li> | ||
| </ul> | ||
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| <h2>Demonstration</h2> | ||
| <h3>Subheading</h3> | ||
| <h3>One more subheading</h3> | ||
| </body> | ||
| </html> |