标签：占位符 title col class span style content 图片格式 鼠标移动
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 6 <title>Document</title> 7 </head> 8 <body> 9 <h1>标题1</h1> 10 <h2>标题2</h2> 11 <h3>标题3</h3> 12 <h4>标题4</h4> 13 <h5>标题5</h5> 14 <h6>标题6</h6> 15 </body> 16 </html>
标签：占位符 title col class span style content 图片格式 鼠标移动
原文地址：https://www.cnblogs.com/dhnblog/p/12297501.html
