标签：idt after yellow before back class tran relative tps
纯CSS实现tooltip提示框，CSS箭头及形状之续篇--给整个tooltip提示框加个边框
学习了：https://blog.csdn.net/u012688910/article/details/41856895
源码膜拜：
<body> <div class="demo"></div> </body>
.demo{ background-color: gray; height: 100px; position: relative; width: 100px; border:2.75px solid red; } .demo:after,.demo:before{ content:‘‘; position:absolute; } .demo:after{ //height:20px; //width:20px; //background:yellow; //border:10px solid lightgreen; border:10px solid transparent; border-top-color:gray; top:100px; left:20px; } .demo:before{ //height:30px; //width:30px; //background:green; //border:15px solid red; border:15px solid transparent; border-top-color:red; top:100px; left:15px; }
纯CSS实现tooltip提示框，CSS箭头及形状之续篇--给整个tooltip提示框加个边框
标签：idt after yellow before back class tran relative tps
原文地址：https://www.cnblogs.com/stono/p/9128269.html
