<html>
<div class="sanjiao active">
<i class="el-icon-star-on"></i>
</div>
</html>
<style>
.sanjiao{
border: 30px solid #ccc;
border-left: 30px solid transparent;
border-bottom: 30px solid transparent;
border-top-right-radius: 5px;
content: "";
width: 0;
position: relative;
.el-icon-star-on{
position: absolute;
top:-20px;
right:-23px;
color:#fff;
font-size: 20px;
}
}
.sanjiao.active{
border-color:#FC9103;
border-left: 30px solid transparent;
border-bottom: 30px solid transparent;
}
</style>
原文：https://www.cnblogs.com/xb130460/p/14468441.html