clip-path: polygon(0 0 , 100% 0,100% 90%, 55% 90%,50% 100%, 45% 90%,0 90% );
-webkit-clip-path: polygon(0 0 , 100% 0,100% 90%, 55% 90%,50% 100%, 45% 90%,0 90% );
2.
裁剪图片
原文：https://www.cnblogs.com/111wdh/p/14158086.html
