<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<style>
body{
margin: 0;
}
.box1{
position: fixed;/*固定位置*/
bottom: 0px;
right: 0px;
}
.close{
position: absolute;
right: 20px;
top: -30px;
color: black;
}
</style>
<div>
<a href="http://www.php.cn">
<img src="https://gss0.baidu.com/-fo3dSag_xI4khGko9WTAnF6hhy/zhidao/pic/item/1c950a7b02087bf46c49d064f9d3572c10dfcf92.jpg" alt="">
<span onclick="this.parentNode.style.display='none'">X</span>
</a>
</div>
</body>
</html>