CSS画三角形

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4   <meta charset="utf-8">
 5   <meta name="viewport" content="width=device-width">
 6   <title>JS Bin</title>
 7   <style>
 8     div{
 9       width:0;
10       height:0;
11       border-width: 100px 100px 100px 100px;
12       border-color: red green blue transparent; /* transparent 透明的*/
13       border-style: solid;
14     }
15   </style>
16 </head>
17 <body>
18   <div></div> 
19 </body>
20 </html>

参考链接：https://www.cnblogs.com/v-weiwang/p/5057588.html

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原文地址：https://www.cnblogs.com/stefango/p/9526410.html