编辑下面的代码:【加编码】
<html> <body> <h1 align="center">This is heading 1</h1> <h2 align="left">This is heading 2</h2> <h3 align="right">This is heading 3</h3> <h4 align="justify">This is heading 4</h4> </body> </html>
结果: 【此窗口】 帮助?
Try it Yourself - © 自强学堂