点击运行
<!DOCTYPE html> <html> <head> <style> body { counter-reset: section; } h1 { counter-reset: subsection; } h1:before { counter-increment: section; content: "板块 " counter(section) ". "; } h2:before { counter-increment: subsection; content: counter(section) "." counter(subsection) " "; } </style> </head> <body> <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>JQuery</h2> <h1>XML 教程</h1> <h2>XML</h2> <h2>XSL</h2> </body> </html>
运行结果
