浮动与清除浮动与解决高度坍塌

电脑版发表于：2022/3/9 9:51

方法1：最后增加一个元素，使用浮动清除，代码如下：
```
<!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>

        .content
        {
            width: 500px;
            background-color: lightgreen;        
        }

        .item
        {
            height: 100px;
            width: 100px;
            background-color: #abcdff;
            border: 1px solid red;
            box-sizing: border-box;
            float: left;
        }

        .last
        {
            /* 清除浮动 */
            clear: both;
        }
    </style>

</head>
<body>
    
    <div class="content">
        <div class="item">1</div>
        <div class="item">2</div>
        <div class="item">3</div>
        <div class="item">4</div>
        <div class="item">5</div>
        <div class="item">6</div>
        <div class="last"></div>
    </div>

</body>
</html>
```
方法2：伪类选择器，不用添加元素
```
.content::after
{
    content: "";
    display: block;
    clear: both;
}
```

TeachingNote

浮动与清除浮动与解决高度坍塌

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