trycss_gen_counter-reset 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<style>
    body {counter-reset:section;}
    h1 {counter-reset:subsection;}
    h1:before
    {
    counter-increment:section;
    content:"Section " counter(section) ". ";
    }
    h2:before 
    {
    counter-increment:subsection;
    content:counter(section) "." counter(subsection) " ";
    }
</style>
</head>
<body>
    <p><b>请注意:</b> IE8仅在指定了!DOCTYPE的情况下才支持这些属性.</p>
    
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</body>
 
 
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运行结果
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