CSS应用-替代标签
代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>tooltip</title>
</head>
<body>
<div class="tooltip">
<span class="caret"></span>
hi,这里是xiao
</div>
<div class="bubble">hi,这里是xiao</div>
<style>
.tooltip,
.bubble{
position: relative;
padding: 10px;
border-radius: 3px;
background: #fff;
border: 1px solid #000;
display: inline-block;
}
.tooltip .caret,
.bubble:before{
width: 10px;
height: 10px;
border-left: 1px solid #000;
border-top: 1px solid #000;
background:#fff;
display: inline-block;
transform: rotateZ(45deg);
position: absolute;
top: -6px;
}
.bubble:before{
content:'';
}
</style>
</body>
</html>
