以下是用css3画3角形，效果如下图
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
span{ display:inline-block; margin-right:10px}
.triangle_top{height:0;width:0; border:10px solid; border-color:transparent transparent red transparent;}
.triangle_left{height:0;width:0; border:10px solid; border-color:transparent red transparent transparent;}
.triangle_right{height:0;width:0; border:10px solid; border-color:transparent transparent transparent red;}
.triangle_bottom{height:0;width:0; border:10px solid; border-color:red transparent transparent transparent;}
</style>
</head>
<body>
<span class="triangle_top"></span>
<span class="triangle_left"></span>
<span class="triangle_right"></span>
<span class="triangle_bottom"></span>
</body>
</html>
时间： 2024-10-05 18:08:26