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1、父级div定义height
<style type="text/css"> .div1{background:#000080;border:1px solid red;/*解决代码*/height:200px;} .div2{background:#800080;border:1px solid red;height:100px;margin-top:10px} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
2、结尾处加空div标签clear:both
<style type="text/css"> .div1{background:#000080;border:1px solid red} .div2{background:#800080;border:1px solid red;height:100px;margin-top:10px} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} /*清除浮动代码*/ .clearfloat{clear:both} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> <div class="clearfloat"></div> </div> <div class="div2"> div2 </div>
3、父级div定义伪类:after和zoom
<style type="text/css"> .div1{background:#000080;border:1px solid red;} .div2{background:#800080;border:1px solid red;height:100px;margin-top:10px} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} /*清除浮动代码*/ .clearfloat:after{display:block;clear:both;content:"";visibility:hidden;height:0} .clearfloat{zoom:1} </style> <div class="div1 clearfloat"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
4、父级div定义overflow:hidden
<style type="text/css"> .div1{background:#000080;border:1px solid red;/*解决代码*/width:98%;overflow:hidden} .div2{background:#800080;border:1px solid red;height:100px;margin-top:10px;width:98%} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
5、父级div定义overflow:auto
<style type="text/css"> .div1{background:#000080;border:1px solid red;/*解决代码*/width:98%;overflow:auto} .div2{background:#800080;border:1px solid red;height:100px;margin-top:10px;width:98%} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
6、父级div也一起浮动
<style type="text/css"> .div1{background:#000080;border:1px solid red;/*解决代码*/width:98%;margin-bottom:10px;float:left} .div2{background:#800080;border:1px solid red;height:100px;width:98%;/*解决代码*/clear:both} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
7、父级div定义display:table
<style type="text/css"> .div1{background:#000080;border:1px solid red;/*解决代码*/width:98%;display:table;margin-bottom:10px;} .div2{background:#800080;border:1px solid red;height:100px;width:98%;} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> </div> <div class="div2"> div2 </div>
8、结尾处加br标签clear:both
<style type="text/css"> .div1{background:#000080;border:1px solid red;margin-bottom:10px;zoom:1} .div2{background:#800080;border:1px solid red;height:100px} .left{float:left;width:20%;height:200px;background:#DDD} .right{float:right;width:30%;height:80px;background:#DDD} .clearfloat{clear:both} </style> <div class="div1"> <div class="left">Left</div> <div class="right">Right</div> <br class="clearfloat" /> </div> <div class="div2"> div2 </div>
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原文地址:http://www.cnblogs.com/bellow/p/4987067.html