无论内容如何，​​Flexbox均匀调整大小

How to size each square the same???

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I am using flexbox to create a grid layout. Most grid cells do not have content and some grid cells do have content. When a cell has content it throws everything off. how can I make sure all cells are even regardless of content?

我正在使用flexbox创建网格布局。大多数网格单元没有内容,一些网格单元确实有内容。当一个单元格有内容时,它会抛弃一切。如何确保所有细胞均匀,无论内容如何?

HTML

I have three rows, each with three cells. Only the center row of the center cell contains children.

我有三行,每行有三个单元格。只有中心单元格的中心行包含子项。

<div>
  <div></div>
  <div></div>
  <div></div>
</div>

<div>
  <div></div>
  <div><span>contains span</span></div>
  <div></div>
</div>

<div>
  <div></div>
  <div></div>
  <div></div>
</div>

CSS

In the css the center space is larger than the other squares.

在css中,中心空间比其他方格大。

body, html {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

body>div {
  display: flex;
}

body>div>div {
  border: solid 1px blue;
}

div {
  flex-grow: 1;
}

body>div:nth-child(2)>div:nth-child(2) {
  display: flex;
  align-items: center;
  justify-content: center;
}

3 个解决方案

#1

You shall use flex-basis to specify the initial length of the flexible item.

您应使用flex-basis指定灵活项目的初始长度。

body, html {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

body>div {
  display: flex;
}

body>div>div {
  border: solid 1px blue;
}

div {
  flex-grow: 1;
   flex-basis: 80px; /*set the initial length*/
}

body>div:nth-child(2)>div:nth-child(2) {
  display: flex;
  align-items: center;
  justify-content: center;
}

<div>
  <div></div>
  <div></div>
  <div></div>
</div>

<div>
  <div></div>
  <div><span>contains span asdsa asd asd asd asdsad ads asd sad</span></div>
  <div></div>
</div>

<div>
  <div></div>
  <div></div>
  <div></div>
</div>

#2

You are using flex-grow: 1. That means that the initial width of the flex items will be the width of its content, and then the available space will be distributed equally.

您正在使用flex-grow:1。这意味着flex项的初始宽度将是其内容的宽度,然后可用空间将平均分配。

However, you want the flex items to have the same width, so you want to ignore the width of their content. You can achieve this with

但是,您希望弹性项具有相同的宽度,因此您希望忽略其内容的宽度。你可以实现这一目标

flex: 1;

Additionally, Flexbox introduces auto as the initial value of min-width. This might produce different widths in some cases, so to be safe better add min-width: 0 or set overflow to anything but visible

此外,Flexbox引入auto作为min-width的初始值。在某些情况下,这可能会产生不同的宽度,因此为了更安全,最好添加min-width:0或将溢出设置为除可见之外的任何内容

body,
html {
  height: 100%;
}
body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
body > div {
  display: flex;
}
body > div > div {
  border: solid 1px blue;
}
div {
  flex: 1;
  min-width: 0;
}
body > div:nth-child(2) > div:nth-child(2) {
  display: flex;
  align-items: center;
  justify-content: center;
}

<div>
  <div></div>
  <div></div>
  <div></div>
</div>
<div>
  <div></div>
  <div><span>contains span</span></div>
  <div></div>
</div>
<div>
  <div></div>
  <div></div>
  <div></div>
</div>

#3

It's just a matter of setting a 33% flex-basis

这只是设置33%弹性基础的问题

  body>div>div {
      border: solid 1px blue;
      flex: 0 0 33%;
    }

body, html {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

body>div {
  display: flex;
}

body>div>div {
  border: solid 1px blue;
  flex: 0 0 33%;
}

div {
  flex-grow: 1;
}

body>div:nth-child(2)>div:nth-child(2) {
  display: flex;
  align-items: center;
  justify-content: center;
}

   <div>
      <div></div>
      <div><span>contains span</span></div>
      <div></div>
    </div>
   <div>
      <div></div>
      <div></div>
      <div></div>
    </div>
      
   <div>
      <div></div>
      <div></div>
      <div></div>
    </div>