如何使中间div填充浮动元素之间的空间?

I have three div elements: left, middle and right. Left and right are fixed and floating. What I want is the middle div to fill the gap in between them.

我有三个div元素:左、中、右。左右是固定和浮动的。我想要的是中间的div来填补它们之间的空白。

This is my code:

这是我的代码:

<!DOCTYPE html>
<html>
<head>
   <style>
      * {border: dotted 1px red;}
      #left {
         width: 200px;
         float: left;
      }
      #middle {
         float: left;
      }
      #right {
         width: 200px;
         float: right;
      }
   </style>
</head>
<body>
   <div id="left"  >  left   </div>
   <div id="middle">  middle </div>
   <div id="right" >  right  </div>
</body>
</html>

Any ideas on how to do this? I tried different solutions but didn't manage to do what I want.

有什么办法吗?我尝试了不同的解决方案，但没有做到我想要的。

2 个解决方案

#1

The key is to restructure your html to have middle last, remove the float from the middle and replace it with overflow: hidden.

关键是将html结构调整为中继，从中间删除浮动，并用overflow: hidden替换它。

View fiddle example.

视图小提琴的例子。

HTML

HTML

<div id="left"  >  left   </div>
<div id="right" >  right  </div>
<div id="middle">  middle </div>

CSS

CSS

#left {
    width: 200px;
    float: left;
}
#middle {
    overflow: hidden;
}
#right {
    width: 200px;
    float: right;
}

#2

I was able to replicate the issue and fix it using percentages instead of absolute values. Since you are looking for something flexible between the two elements this should work.

我能够复制这个问题并使用百分比而不是绝对值来修复它。由于您正在寻找两个元素之间的灵活性，所以这应该是可行的。

#left {
    width: 20%;
    float: left;
    background: #ccc;
}
#middle {
    width: 60%;
    float: left;
    display: block;
    background: #ddd;
}
#right {
    width: 20%;
    float: right;
    background: #bbb;
}

Here's a demo

这是一个演示

#1