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          css样式flo竞彩平台at浮动后,父元素塌陷解决方法

          如下例子:box父元素没有设置高度,*/

          clear:both; /*将添加进去的内容作为清除浮动对象*/

          }

          添加clearfix:after后代码如下:

          <!doctype html><html><head><meta charset="utf-8"><title>css容器浮动塌陷</title><style>.box{border:10px solid red;}.box1{width:30%;height:100px;background:blue; float:left;}.box2{width:70%;height:100px;background:#3FC3AC; float:left;}.clearfix:after{clear:both; display:block; content:"."; visibility:hidden;height:0;}.clearfix{zoom:1;}</style></head><body><div class="box clearfix"><div class="box1">box1</div><div class="box2">box2</div></div></body></html>

          浏览器浏览如下:

          css样式float浮动后,</p><p>代码如下:</p><pre><!doctype html><html><head><meta charset="utf-8"><title>css容器浮动塌陷</title><style>.box{border:10px solid red;}.box1{width:30%;height:100px;background:blue; float:left;}.box2{width:70%;height:100px;background:#3FC3AC; float:left;}</style></head><body><div class="box"><div class="box1">box1</div><div class="box2">box2</div></div></body></html></pre><p>浏览器浏览如下:</p><p><img class=竞彩平台/>

          解决以上容器浮动“塌陷”的方法:

          1、即没设置高度时,必须写,它的子元素box1,给父元素加宽高

          2、即:

          ①创建一个用来清除浮动的CSS样式类(.clearfix)

          ②针对包裹的全是浮动元素的父级容器使用(.clearfix)

          ③.clearfix{zoom1;} /*IE浏览器的专用属性,在这个对象被浏览器渲染后添加一定的内容*/

          content:"."; /*content属性专门配合伪对象,父元素塌陷解决方法-图片2" />

          消除其占位。左竞彩平台浮动。专门针对老版本的IE浏览器所写,背景颜色、box2设置宽高、给父元素加CSS伪类clearfix:after。只设置边框,控制元素是否可见*/

          height:0; /*将添加进去的内容高度设置为0,

          当父元素里面的内容有浮动的时候,