CSS之盒子模型

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我是靠谱客的博主美满缘分，最近开发中收集的这篇文章主要介绍CSS之盒子模型，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

<!DOCTYPE html>
<head>
<meta charset="utf-8">
<!--适应-->
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>盒子模型</title>
<style type="text/css">
div{
width: 250px;
height: 100px;
border:1px solid #000000;
color: black;
font-weight: bold;
text-align: center;
margin-top: 10px;
padding-top: 10px;
margin-left: 3px;
}
div#d1{
position: relative;
float: left;
background-color: red;
}
div#d2{
position: relative;
float: left;
background-color: green;
}
div#d3{
position: relative;
float: left;
background-color: yellow;
}
div#d4{
position: relative;
float: left;
background-color: blue;
}
</style>
</head>
<body>
<div id="d1">
#d1
</div>
<div id="d2">
#d2
</div>
<div id="d3">
#d3
</div>
<div id="d4">
#d4
</div>
</body>
</html>