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ClassContent/历届学生/front-end-team/每天课程/2022-03-08/笔记.txt
2024-09-27 02:06:13 +08:00

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浮动 float :
作用 : 把块元素放一行
父元素的宽高 被内部子元素 撑开 的
当 子元素设置浮动后,子元素漂浮走了,所以父元素内部其实没有子元素,所以高度为0
如何解决:
1:可以给父元素手动设置高度
2:overflow: hidden;