没网，css都没加载进来的时候，网站功能照样能用
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
*{
margin: 0;
padding: 0;
}
a{
display: inline-block;
text-decoration: none;
color: #424242;
height: 0;
190px;
padding-top: 90px;
overflow: hidden;
background-image: url(taobao.png);
background-size: 190px 90px;
}
</style>
</head>
<body>
<a href="http://taobao.com" target="_blank">淘宝网</a>
</body>
</html>