1 <!doctype html>
 2 <html>
 3     <head>
 4         <meta charset="utf-8">
 5         <title></title>
 6         <meta name="keywords", content="">
 7         <meta name="description", content="">
 8         <style type="text/css">
 9             *{margin:0; padding:0;}
10             .box{
11                 width:200px;
12                 height:200px;
13                 background:red;
14                 border:5px solid green; /*
15                                                 也可以顺时针赋值像素:border-top(right,bottom,left)
16                                                 边框有几种形式: 
17                                                 none : 无边框(默认值)
18                                                 solid:实线
19                                                 dashed:虚线
20                                                 dotted:点状线
21                                                 double:双实线
22                                                 groove :3D凹槽
23                                                 ridge:3D立槽
24                                                 inset:3D嵌入边框1
25                                                 outset:3D嵌入边框2
26                                         */
27             }
28             .box1{  /*设置三角形*/
29                 width:0px;
30                 height:0px;
31                 border:5px solid transparent;  /*设置边框为透明(transparent)*/ 
32                 border-bottom: 10px solid green;
33             }
34         </style>
35     </head>
36     <body>
37         <div class="box"></div>
38         <div class="box1"></div>
39     </body>
40 </html>

 

posted on 2018-12-10 22:20  cleverbiger  阅读(458)  评论(0)    收藏  举报