边框总结及案例
border：solid(实线)double(双)dashed(--) dotted(....)
border-radius:边角弧度 border:none 无边框
border-top left bottom ritght:上 左 下 右
box-shadow:x轴 y轴 宽度 颜色 inset(内部)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>边框</title>
<link rel="stylesheet" type="text/css" href="images/logo.png">
<style type="text/css">
.box{width: 200px;height: 200px;border: 1px /*solid double dashed */dotted #ccc;border-radius: 100px;}
.main{width: 200px;height: 200px;border-top: 1px solid red;background: #ccc;border-left:1px solid red; }
.shadow{width: 100%;height: 100px;box-shadow:0px 6px 35px blue inset;font-size: 50px;line-height: 100px;text-align: center;}
.button{border: none;}
</style>
</head>
<body>
<div>边框样式</div>
<div></div>
<div></div>
<button>去边框</button>
</body>
</html>