<!DOCTYPE html>
<html lang="ko">
<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>border</title>
<style>
/* default setting */
* {margin: 0; padding: 0;}
div {
width: 200px; height: 200px;
background-color: #ccc;
font-size: 20px;
text-align: center;
line-height: 200px;
margin: 10px;
}
.box01 {
border-top-style: solid;
border-right-style: dotted;
border-bottom-style: dashed;
border-left-style: double;
border-color: red;
}
.box02 {
border-style: solid;
/* border-top-width: 2px; */
border-right-width: 5px;
border-bottom-width: 15px;
/* border-left-width: 20px; */
}
.box03 {
border: 1px solid #999; box-sizing: border-box;
}
.box03:hover {
border: 1px solid black;
}
</style>
</head>
<body>
<div class="box01">border_box01</div>
<div class="box02">border_box02</div>
<div class="box03">border_box03</div>
</body>
</html>