平均分配固定大小容器的空间。一个flexbox的案例？

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.

如何设计HTML / CSS结构，将固定大小的容器水平分成三个部分。第一部分应该与内容需求一样高。第二部分和第三部分将共享剩下的空间五十五 - 无论其内容如何。如果其内容的大小超出此限制，则该部分应该是可滚动的。

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

它的HTML部分是微不足道的：一个div容器，有三个div作为子项。

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

我尝试使用flexbox解决这个问题 - 但是可能有更好的选择：

The css part:

css部分：

#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.

不幸的是，只有当项目2或3的内容不是太大时，这才有效。

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

请参阅此小提琴，了解问题的更详细实现。

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?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
    <br>right?
  </div>
</div>

1 个解决方案

#1

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.

是的，你可以使用flex。这是对您的代码的一点改进。 Item1不需要具有flex规则，item2和item3将具有flex：1。

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

我还添加了overflow-y：auto;规则使其可滚动。

Example

例

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

#1