如何制作粘性页脚并仍然能够制作可滚动的 flexbox 内容? [英] How to do a sticky footer and still be able to do scrollable flexbox content?

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问题描述

我正在尝试实现

如您所见，红色区域是可滚动的(min-height: 300px).请注意，即使视口不小于红色区域的最小高度 + 蓝色区域，页脚也在屏幕外.

有没有办法在做一个粘性页脚的同时仍然使用 flexbox flex: 1 和可滚动内容?

更新

这是另一张图片，代表我在尝试完成这项工作时面临的另一个大问题:

解决方案

有没有办法做一个粘性页脚并且仍然使用 flexbox flex: 1带有可滚动的内容?

是的，你需要的是一直使用 Flexbox.

因此，不要在 article-1/card 上使用 min-height/height，而是更改它们的 CSS对此:

.article-1 {弹性:1；显示:弹性；最小高度:0；/* 添加，i.a Firefox 需要这个 */}.卡片 {溢出:自动；}

注意，我还删除了一些不需要的属性，主要是因为它们被设置为默认值，并添加了一些.以及为什么需要 min-width，这里有很好的解释:

更新小提琴

堆栈片段

html, body{高度:100%；边距:0；字体粗细:粗体；}.header {位置:绝对；高度:40px；背景颜色:灰色；z-索引:1；宽度:100%；}.内容 {显示:弹性；弹性方向:列；高度:100%；填充顶部:40px；box-sizing: 边框框；/*  添加  */}.裹 {弹性:1；显示:弹性；弹性方向:列；最小高度:0；/* 添加，i.a Firefox 需要这个 */}.容器 {弹性:1；填充:10px；box-sizing: 边框框；/*  添加  */显示:弹性；弹性方向:列；最小高度:0；/* 添加，i.a Firefox 需要这个 */}.第1条 {弹性:1；显示:弹性；最小高度:0；/* 添加，i.a Firefox 需要这个 */}.卡片 {溢出:自动；}.card-text {高度:2000px；宽度:2000px；背景颜色:红色；}.article-2 {弹性:无；高度:40px；背景颜色:蓝色；}.页脚{位置:相对；高度:40px；背景颜色:灰色；}

Header
<div class="内容"><div class="wrap"><div class="容器"><div class="article-1"><div class="card"><div class="card-text">可滚动的 flex: 1 div
1.可滚动<br>2.可滚动<br>3.可滚动<br>4. 等等...

<div class="article-2">flex: 无 div

<div class="footer">Footer</div>

<小时>

根据评论更新

如果需要article-1有一个最小高度，并且避免绝对定位，可以在content上设置一个最小高度为好吧，在较小的屏幕上将 footer 进一步向下推.

更新小提琴 2

堆栈片段

html, body{高度:100%；边距:0；字体粗细:粗体；}.header {位置:绝对；高度:40px；背景颜色:灰色；z-索引:1；宽度:100%；}.内容 {显示:弹性；弹性方向:列；高度:100%；最小高度:450px；/*  添加  */填充顶部:40px；box-sizing: 边框框；/*  添加  */}.裹 {弹性:1；显示:弹性；弹性方向:列；最小高度:0；/* i.a Firefox 需要这个 */}.容器 {弹性:1；填充:10px；box-sizing: 边框框；/*  添加  */显示:弹性；弹性方向:列；最小高度:0；/* i.a Firefox 需要这个 */}.第1条 {弹性:1；显示:弹性；最小高度:300px；/* 改变了 */}.卡片 {溢出:自动；}.card-text {高度:2000px；宽度:2000px；背景颜色:红色；}.article-2 {弹性:无；高度:40px；背景颜色:蓝色；}.页脚{位置:相对；高度:40px；背景颜色:灰色；}

Header
<div class="内容"><div class="wrap"><div class="容器"><div class="article-1"><div class="card"><div class="card-text">可滚动的 flex: 1 div
1.可滚动<br>2.可滚动<br>3.可滚动<br>4. 等等...

<div class="article-2">flex: 无 div

<div class="footer">Footer</div>

I'm trying to achieve the sticky footer (flexbox version). However, I'm unable to find a working solution if I also want the ability to have scrollable content inside a flex: 1 div (which requires parents to have height: 100%).

Here's a fiddle to demonstrate the problem: https://jsfiddle.net/gfaqLh42/6/

As you can see, the red area is scrollable (with a min-height: 300px). Notice the footer is offscreen even though the viewport is not less than the red area's min-height + blue area.

Is there a way to do a sticky footer and still use flexbox flex: 1 with scrollable content?

Update

Here's another picture to represent the other big problem I face in trying to make this work:

解决方案

Is there a way to do a sticky footer and still use flexbox flex: 1 with scrollable content?

Yes, and what you need is to use Flexbox all the way.

So instead of using min-height/height on article-1/card, change their CSS to this:

.article-1 {
  flex: 1;
  display: flex;
  min-height: 0;                     /*  added, i.a Firefox need this  */
}

.card {
  overflow: auto;
}

Note, I also remove some properties not needed, mainly as they were set to their defaults, and added some. And why the need of min-width, is well explained here:

Updated fiddle

Stack snippet

html, body{
  height: 100%;
  margin: 0;
  font-weight: bold;
}

.header {
  position: absolute;
  height: 40px;
  background-color: grey;
  z-index: 1;
  width: 100%;
}

.content {
  display: flex;
  flex-direction: column;
  height: 100%;  
  padding-top: 40px;
  box-sizing: border-box;            /*  added  */
}

.wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;                     /*  added, i.a Firefox need this  */
}

.container {
  flex: 1;
  padding: 10px;
  box-sizing: border-box;            /*  added  */
  display: flex;
  flex-direction: column;
  min-height: 0;                     /*  added, i.a Firefox need this  */
}

.article-1 {
  flex: 1;
  display: flex;
  min-height: 0;                     /*  added, i.a Firefox need this  */
}

.card {
  overflow: auto;
}

.card-text {
  height: 2000px;
  width: 2000px;
  background-color: red;
}

.article-2 {
  flex: none;
  height: 40px;
  background-color: blue;
}

.footer {
  position: relative;
  height: 40px;
  background-color: grey;
}

<div class="header">Header</div>
<div class="content">

  <div class="wrap">
    <div class="container">
      <div class="article-1">
        <div class="card">
          <div class="card-text">
            scrollable flex: 1 div<br>
            1. scrollable<br>
            2. scrollable<br>
            3. scrollable<br>
            4. etc...
          </div>
        </div>
      </div>
      <div class="article-2">
        flex: none div
      </div>
    </div>
  </div>

  <div class="footer">Footer</div>
</div>

Updated based on a comment

If there is a need for the article-1 to have a minimum height, and to avoid absolute positioning on it, a minimum height could be set on content as well, to push the footer further down on smaller screens.

Updated fiddle 2

Stack snippet

html, body{
  height: 100%;
  margin: 0;
  font-weight: bold;
}

.header {
  position: absolute;
  height: 40px;
  background-color: grey;
  z-index: 1;
  width: 100%;
}

.content {
  display: flex;
  flex-direction: column;
  height: 100%;  
  min-height: 450px;                 /*  added  */
  padding-top: 40px;
  box-sizing: border-box;            /*  added  */
}

.wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;                     /*  i.a Firefox need this  */
}

.container {
  flex: 1;
  padding: 10px;
  box-sizing: border-box;            /*  added  */
  display: flex;
  flex-direction: column;
  min-height: 0;                     /*  i.a Firefox need this  */
}

.article-1 {
  flex: 1;
  display: flex;
  min-height: 300px;                 /*  changed  */
}

.card {
  overflow: auto;
}

.card-text {
  height: 2000px;
  width: 2000px;
  background-color: red;
}

.article-2 {
  flex: none;
  height: 40px;
  background-color: blue;
}

.footer {
  position: relative;
  height: 40px;
  background-color: grey;
}

<div class="header">Header</div>
<div class="content">

  <div class="wrap">
    <div class="container">
      <div class="article-1">
        <div class="card">
          <div class="card-text">
            scrollable flex: 1 div<br>
            1. scrollable<br>
            2. scrollable<br>
            3. scrollable<br>
            4. etc...
          </div>
        </div>
      </div>
      <div class="article-2">
        flex: none div
      </div>
    </div>
  </div>

  <div class="footer">Footer</div>
</div>

这篇关于如何制作粘性页脚并仍然能够制作可滚动的 flexbox 内容?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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