<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div {
width: 200px;
height: 200px;
background-color: pink;
/* border: 粗细 线条样式 颜色 -- 不分先后顺序 */
/* solid : 实线 */
/* border: 1px solid #000; */
/* dashed: 虚线 */
/* border: 5px dashed #000; */
/* dotted : 点线 */
/* border: 5px dotted #000; */
border-left: 5px dotted #000;
border-right: 5px dotted #000;
border-top: 1px solid red;
border-bottom: 1px solid red;
}
</style>
</head>
<body>
<div>内容</div>
</body>
</html>
