W3School TIY
编辑您的代码：
<html> <head> <style type="text/css"> h1, h2, h3, h4, h5, h6 {color:blue;} </style> </head> <body> <h1>这是 heading 1</h1> <h2>这是 heading 2</h2> <h3>这是 heading 3</h3> <h4>这是 heading 4</h4> <h5>这是 heading 5</h5> <h6>这是 heading 6</h6> </body> </html>
查看结果: