平均分配一个固定大小的容器的空间。 flexbox的情况？ [英] split space of a fixed size container equally. a case for flexbox?

问题描述

如何设计HTML / CSS结构，将一个固定大小的容器水平分割成三部分。第一部分应该和内容需求一样高。无论内容如何，​​第二和第三部分将分享剩下的五十五个空间。如果内容的大小超过了这个限制，那么该部分应该是可滚动的。

它的HTML部分是微不足道的：A div $ div 的孩子。

我试图用flexbox来解决这个问题。可能有更好的选择：

css部分：

  #container {
 position：absolute; 
宽度：100％;身高：100％ 
 display：flex; 
 flex-direction：column; 
} 
 
＃item1 {flex：0 0 auto; } 
＃item2 {flex：1 1 auto; } 
＃item3 {flex：1 1 auto; } 
  

不幸的是，这只有在项目2或3的内容不太大时才有效。

请参阅这个小提琴以获得更详细的实施问题。
$ b

body {margin：0; overflow：hidden;} * {box-sizing：border-box;}＃container {position：absolute;宽度：100％;身高：100％边框：2px纯绿色;显示：flex; flex-direction：column;}＃item1 {flex：0 0 auto; background-color：Bisque;}＃item2 {flex：1 1 auto; background-color：DarkOrange;}＃item3 {flex：1 1 auto;背景颜色：暗草绿;}

<预类= 片段码-HTML语言HTML的prettyprint-越权> < DIV ID = 容器 > < div id =item1>我会像我的内容一样高。< / div> < div id =item2>从其他方面来看，我会精确到50％。无论我的内容有多短或长。如果需要，应该有滚动条。< / div> < div id =item3>其余的其他50％！ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ <峰; br>正确？ < / DIV>< / DIV>

解决方案是的，你可以使用flex。这是对你的代码的一点点改进。 Item1不需要flex规则，item2和item3将有 flex：1 。

我也添加了 overflow-y：auto; 规则来滚动。
$ b 实施例

 ＃ITEM1 {背景 - 颜色：浓汤; } 
＃item2 {flex：1;背景颜色：DarkOrange; overflow-y：auto;} 
＃item3 {flex：1;背景颜色：MediumAquaMarine; overflow-y：auto;} 
  

How can a HTML/CSS structure be designed, that splits a fixed size container horizontally into three parts. The first part should be as tall as it's content needs. The second and the third part would share the remaining space fifty-fifty - regardless of their contents. If the size of their contents exceeds this limitation, the section should be scrollable.

The HTML part of it is trivial: A div container with three div's as children.

I tried to solve this with flexbox - however there might be a better choice for this:

The css part:

#container {
  position: absolute;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
}

#item1 { flex: 0 0 auto; }
#item2 { flex: 1 1 auto; }
#item3 { flex: 1 1 auto; }

Unfortunately this only works if the contents of item 2 or 3 is not too large.

See this fiddle for a bit more detailed implementation of the problem.

body {
  margin: 0;
  overflow: hidden;
}
* {
  box-sizing: border-box;
}
#container {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid green;
  display: flex;
  flex-direction: column;
}
#item1 {
  flex: 0 0 auto;
  background-color: Bisque;
}
#item2 {
  flex: 1 1 auto;
  background-color: DarkOrange;
}
#item3 {
  flex: 1 1 auto;
  background-color: MediumAquaMarine;
}

<div id="container">
  <div id="item1">I'll be as tall as my content takes.</div>
  <div id="item2">From the rest, I'll take exactly 50%. No matter how short or long my content is. If needed there should be scrollbars.</div>
  <div id="item3">I'll take the other 50% of the rest!
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
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    <br>right?
    <br>right?
    <br>right?
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    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
  </div>
</div>

解决方案

Yes, you can use flex. Here's a little improvement for your code. Item1 doesn't need to have a flex rule and item2 and item3 will have flex: 1.

I also added the overflow-y: auto; rule to make it scrollable.

Example

#item1 {background-color: Bisque ; }
#item2 { flex: 1; background-color: DarkOrange ; overflow-y: auto;}
#item3 { flex: 1; background-color: MediumAquaMarine ; overflow-y: auto;}

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