边框边框边框边框边框边框边框边框边框
<html>
<head>
.box{height:80px;width:80px;border-right:red;solid}//设置边框
</head>
<body>
<div class="box"></div>
</body>
</html>
<html>
<head>
.box{height:80px;width:80px;border-right:red;solid}//设置边框
</head>
<body>
<div class="box"></div>
</body>
</html>