<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.1{width: 200px;height: 200px;border: 1px solid red;}
</style>
</head>
<body>
<div class="1" <!--style="width: 100px;height: 100px; border:1px solid red;"-->
</div>
</body>
</html>