xxxxxxxxxx<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> <h1>HTML 教程</h1> <h2>HTML 教程</h2> <h2>XHTML 教程</h2> <h2>CSS 教程</h2> <h1>Scripting 教程</h1> <h2>JavaScript</h2> <h2>VBScript</h2> <h1>XML 教程</h1> <h2>XML</h2> <h2>XSL</h2></body></html>