这篇文章主要介绍CSS中width和height的默认值auto与%示例分析，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
结论
案例
一定跑一遍，花几分钟体会一下尽量被父级包裹与突破父级的限制
width案例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
* {
margin: 0;padding: 0;
}
body {
background: #dcdcdc;
}
.box {
width: 400px;
border: 3px solid red;
padding: 0 50px;
}
.box1 {
width: auto;
height: 100px;
background: pink;
padding: 0 50px;
margin: 0 50px;
border-width: 0 50px;
border-style: solid;
border-color: green;
}
.box2 {
width: 100%;
height: 100px;
background: gold;
padding: 0 50px;
margin: 0 50px;
border-width: 0 50px;
border-style: solid;
border-color: green;
}
</style>
</head>
<body>
<div class="box">
<div class="box1"></div>
<div class="box2"></div>
</div>
</body>
</html>height案例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
* {
margin: 0;padding: 0;
}
body {
background: #dcdcdc;
}
.box {
width: 400px;
border: 3px solid red;
padding: 50 0px;
height: 400px;
}
.box1 {
width: 200px;
height:auto;
background: pink;
padding: 50px 0px;
margin: 50px 0px;
border-width: 50px 0px;
border-style: solid;
border-color: green;
}
.box2 {
width: 200px;
height:100%;
background: gold;
padding: 50px 0px;
margin: 50px 0px;
border-width: 50px 0px;
border-style: solid;
border-color: green;
}
</style>
</head>
<body>
<div class="box">
<div class="box1"></div>
<div class="box2"></div>
</div>
</body>
</html>以上是“CSS中width和height的默认值auto与%示例分析”这篇文章的所有内容，感谢各位的阅读！希望分享的内容对大家有帮助，更多相关知识，欢迎关注天达云行业资讯频道！