运行 ❯
获取您
自己
的网站
×
更改方向
保存代码
更改主题，深色/浅色
转到 Spaces
<!DOCTYPE html> <html> <head> <style> body { counter-reset: section; } h2::before { counter-increment: section; content: "Section " counter(section, upper-roman) ": "; } </style> </head> <body> <h1>Using CSS Counters:</h1> <h2>HTML Tutorial</h2> <h2>CSS Tutorial</h2> <h2>JavaScript Tutorial</h2> </body> </html>
