CSS和html如何实现这个效果

淘宝购买 .taobao{width:224px;height:224px; position:relative; z-index:0; overflow:hidden; cursor:pointer} .taobao.img{display:block; position:relative; z-index:0;} .taobao a{display:none;height:20px; text-align:center; background:red; color:#fff; text-deco