1 <!DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8" />
5 <title></title>
6 <style type="text/css">
7 *{
8 margin:0;
9 padding:0;
10 }
11 div{
12 width:0;
13 height:0;
14 border:50px solid;
15 border-color:transparent transparent yellow transparent;
16 margin:100px auto;
17 }
18 </style>
19 </head>
20 <body>
21 <div></div>
22 </body>
23 </html>
转载于:https://www.cnblogs.com/liufuyuan/p/10259999.html
