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This article mainly shares with you several methods of clearing floats in CSS, hoping to help you.
1. The parent p defines height
<style type="text/css"> .p1{background:#000080;border:1px solid red;height:200px;} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p></p>
The parent p manually defines the height, which solves the problem that the parent p cannot automatically obtain the height (only recommended for layouts with fixed height)
2. Add an empty p tag at the end clear:both
<style type="text/css"> .p1{background:#000080;border:1px solid red} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} .clearfloat{clear:both}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p> <p class="clearfloat"></p></p>
添加一个空p,利用css提高的clear:both清除浮动,让父级p自动获取高度(以前使用的较多)
3. Parent p defines pseudo-classes: after and zoom
<style type="text/css"> .p1{background:#000080;border:1px solid red;} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} .clearfloat:after{display:block;clear:both;content:"";visibility:hidden;height:0} .clearfloat{zoom:1}</style><p class="p1 clearfloat"> <p class="left">Left</p> <p class="right">Right</p></p>
Only supported by IE8 and above and non-IE browsers :after,zoom (ie proprietary attribute) can solve the floating problem of IE6 and IE7
4. Parent p definition overflow:hidden
<style type="text/css"> .p1{background:#000080;border:1px solid red;width:98%;overflow:hidden} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p></p>
必须定义width或zoom:1,同时不能定义height,使用overflow:hidden时,浏览器会自动检查浮动区域的高度
5. Parent definition: overflow: auto
<style type="text/css"> .p1{background:#000080;border:1px solid red;/*解决代码*/width:98%;overflow:auto} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p></p>
必须定义width或zoom:1,同时不能定义height,使用overflow:auto时,浏览器会自动检查浮动区域的高度
6. The parent p also floats together
<style type="text/css"> .p1{background:#000080;border:1px solid red;width:98%;margin-bottom:10px;float:left} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p></p>
All codes float together, new floats will be generated, just for understanding
7. The parent p defines display:table
<style type="text/css"> .p1{background:#000080;border:1px solid red;width:98%;display:table;margin-bottom:10px;} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p></p>
Change the attributes of p into a table
8.At the end Add the br tag clear: both
<style type="text/css"> .p1{background:#000080;border:1px solid red;margin-bottom:10px;zoom:1} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} .clearfloat{clear:both}</style><p class="p1"> <p class="left">Left</p> <p class="right">Right</p> <br class="clearfloat" /></p>
The parent p defines zoom: 1 to solve the IE floating problem, and add the br tag clear: both
at the end. Related recommendations:
About the method of clearing floats in CSS
What are the methods and advantages and disadvantages of clearing floats
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