使用display：flex填充剩余的垂直空间

2018-06-04 19:31:11

在3行布局中：

首行的大小应根据其内容来确定

底部的行应该有一个固定的像素高度

中间一排应该扩大以填充容器

问题是随着主要内容的扩展，它会压缩页眉和页脚行：

表现不佳

HTML：

<section>
  <header>
    header: sized to content
    <br>(but is it really?)
  </header>
  <div>
    main content: fills remaining space<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    <!-- uncomment to see it break - ->
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    <!-- -->
  </div>
  <footer>
    footer: fixed height in px
  </footer>
</section>

CSS：

section {
  display: flex;
  flex-flow: column;
  align-items: stretch;
  height: 300px;
}
header {
  flex: 0 1 auto;
  background: tomato;
}
div {
  flex: 1 1 auto;
  background: gold;
  overflow: auto;
}
footer {
  flex: 0 1 60px;
  background: lightgreen;
  /* fixes the footer: min-height: 60px; */
}

小提琴：

http://jsfiddle.net/7yLFL/1/（工作，小内容）

http://jsfiddle.net/7yLFL/（破解，内容较大）

我处于幸运的境地，我可以使用最新最好的CSS，忽略旧版浏览器。我想我可以使用flex布局来最终摆脱旧的基于表格的布局。出于某种原因，它没有做我想做的事......

为了记录，关于“填充剩余高度”的SO有很多相关的问题，但没有解决我用flex所遇到的问题。参考文献：

让div填充剩余屏幕空间的高度

填充剩余的垂直空间 - 仅限CSS

有一个div用于与另一个div共享时填充容器的剩余高度/宽度？

使嵌套div伸展到剩余容器div高度的100％

我怎样才能让我的柔性箱布局占据100％的垂直空间？

等等

简单一点： DEMO

section {
  display: flex;
  flex-flow: column;
  height: 300px;
}
header {
  background: tomato;
/* no flex rules, it will grow */
}
div {
  flex: 1;/* 1 and it will fill whole space left if no flex value are set to other children*/
  background: gold;
  overflow: auto;
}
footer {
  background: lightgreen;
  min-height: 60px; /* min-height has its purpose :) , unless you meant height*/
}

下面的示例包含滚动行为，如果扩展中心组件的内容超出其边界。此外，中心组件占用视口中剩余空间的100％。

jsfiddle在这里

html, body, .r_flex_container{
    height: 100%;
    display: flex;
    flex-direction: column;
    background: red;
    margin: 0;
}
.r_flex_container {
    display:flex;
    flex-flow: column nowrap;
    background-color:blue;
}

.r_flex_fixed_child {
    flex:none;
    background-color:black;
    color:white;

}
.r_flex_expand_child {
    flex:auto;
    background-color:yellow;
    overflow-y:scroll;
}

可用于演示此行为的html示例

<html>
<body>
    <div class="r_flex_container">
      <div class="r_flex_fixed_child">
        <p> This is the fixed 'header' child of the flex container </p>
      </div>
      <div class="r_flex_expand_child">
            <article>this child container expands to use all of the space given to it -  but could be shared with other expanding childs in which case they would get equal space after the fixed container space is allocated. 
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,
            </article>
      </div>
      <div class="r_flex_fixed_child">
        this is the fixed footer child of the flex container
        asdfadsf
        <p> another line</p>
      </div>

    </div>
</body>
</html>

更现代的方法是使用网格属性。

section {
  display: grid;
  align-items: stretch;
  height: 300px;
  grid-template-rows: min-content auto 60px;
}
header {
  background: tomato;
}
div {
  background: gold;
  overflow: auto;
}
footer {
  background: lightgreen;
}

<section>
  <header>
    header: sized to content
    <br>(but is it really?)
  </header>
  <div>
    main content: fills remaining space<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
    
  </div>
  <footer>
    footer: fixed height in px
  </footer>
</section>

链接地址: http://www.djcxy.com/p/15509.html

上一篇: Fill remaining vertical space with CSS using display:flex

下一篇: How to make the main content div fill height of screen with css