arrow css

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
.tri {
position: absolute;
left: -21px;
top: 40px;
0;
height: 0;
line-height: 0;
font-size: 0;
border: 12px solid #e5e5e5;
border-color: transparent #e5e5e5 transparent transparent;
border-style: dashed solid dashed dashed;
display: block;
}
 
.show {
display: block;
left: 230px;
top: 0;
224px;
line-height: 20px;
font-size: 12px;
background: #fff;
border: 3px solid #ededed;
padding: 5px 0;
overflow: hidden;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.trii {
position: absolute;
left: -2px;
top: -7px;
0;
height: 0;
line-height: 0;
font-size: 0;
border: 7px solid #fff;
border-color: transparent #fff transparent transparent;
border-style: dashed solid dashed dashed;
 
.showid{position:absolute;top:-21px;left:40px;height:0;line-height:0;
    font-size:0;border:12px solid #ededed;border-color:transparent transparent #ededed transparent;border-style:dashed dashed solid dashed;
 }
 .showname{position:absolute;top:-1px;left:-8px;border:8px solid #fff;border-color:transparent transparent #fff transparent;border-style:dashed dashed solid dashed;height:0;line-height:0;font-size:0;}
.topshow{
   border:4px solid #ededed;padding:6px;height:100px;100px;margin:auto; word-break:break-all; word-wrap:break-word;
}
</style>
</head>
 
<body>
<div style="position:relative;margin:100px 200px 50px">
 <div class="tri" ><div class="trii"></div></div>
 <div class="show" style="height:100px"></div>
</div> 
 
 
<div style="position:relative;100px;height:100px;">
 <div class="showid"><div class="showname"></div></div>
 <div class="topshow">11111333333333</div>
</div>
</body>
</html>
原文地址:https://www.cnblogs.com/sunrise/p/3490848.html