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解决高度塌陷、外边距重叠

解决高度塌陷、外边距重叠

作者: xiaohan_zhang | 来源:发表于2019-11-26 12:40 被阅读0次
  • 高度塌陷
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>解决高度塌陷</title>
    <style>
        .box1{
            border: 10px red solid;
        }
        .box2{
            width: 100px;
            height: 100px;
            background-color: cadetblue;
            float: left;
        }
        .box1::after{
            content: '';
            display: block;
            clear: both;
        }
        /*box3没有脱离文档流,box3会把box1高度撑起来*/
        /*.box3{*/
        /*    clear: both;*/
        /*}*/
    </style>
</head>
<body>
    <div class="box1">
        <div class="box2"></div>
<!--        <div class="box3"></div>-->
    </div>
</body>
</html>
  • 同时解决高度塌陷和外边距重叠
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>解决外边距重叠</title>
    <style>
        .box1{
            width: 200px;
            height: 200px;
            background-color: aqua;
        }
        .box2{
            width: 100px;
            height: 100px;
            background-color: fuchsia;
            margin-top: 100px;
        }
        /*可以同时解决高度塌陷和外边距重叠问题*/
        .clearfix::before,.clearfix::after{
            content: '';
            display: table;
            clear: both;
        }
    </style>
</head>
<body>
    <div class="box1 clearfix">
        <div class="box2"></div>
    </div>
</body>
</html>

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