标签：
span{
display: inline-block;
border-top: 100px solid red;
border-right: 100px solid transparent;
border-bottom: 100px solid transparent;
border-left: 100px solid transparent;
border-left: 100px solid transparent;
}标签：
原文地址：http://www.cnblogs.com/jinsuo/p/5620065.html
