align-content

概述

CSS align-content属性定义弹性容器的侧轴方向上有额外空间时，如何排布每一行。当弹性容器只有一行时无作用。

更多属性和信息参见使用CSS flexible boxes。

语法

/* Pack lines from the cross-axis start */
align-content: flex-start;

/* Pack lines to the cross-axis end */
align-content: flex-end;

/* Pack lines around the cross-axis center */
align-content: center;

/* Distribute lines along the cross-axis, start to end */
align-content: space-between;

/* Distribute lines along the cross-axis, equally spaced */
align-content: space-around;

/* Stretch lines to occupy the whole cross-axis */
align-content: stretch;

align-content: inherit;

取值

flex-start

所有行从垂直轴起点开始填充。第一行的垂直轴起点边和容器的垂直轴起点边对齐。接下来的每一行紧跟前一行。

flex-end

所有行从垂直轴终点开始填充。第一行的垂直轴终点边和容器的垂直轴终点边对齐。接下来的每一行紧跟前一行。

center

所有行朝向容器的中心填充。每行互相紧挨，相对于容器居中对齐。容器的垂直轴起点边和第一行的距离相等于容器的垂直轴终点边和最后一行的距离。

space-between

所有行在容器中平均分布。相邻两行间距相等。容器的垂直轴起点边和终点边分别与第一行和最后一行的边对齐。

space-around

所有行在容器中平均分布，相邻两行间距相等。容器的垂直轴起点边和终点边分别与第一行和最后一行的距离是相邻两行间距的一半。

stretch

拉伸所有行来填满剩余空间。剩余空间平均的分配给每一行

形式化语法

How to read CSS syntax.

flex-start | flex-end | center | space-between | space-around | stretch

例子

HTML:

<div id="container">
  <p>align-content: flex-start</p>
  <div id="flex-start">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
  <p>align-content: center</p>
  <div id="center">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
  <p>align-content: flex-end</p>
  <div id="flex-end">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
  <p>align-content: space-between</p>
  <div id="space-between">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
  <p>align-content: space-around</p>
  <div id="space-around">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
  <p>align-content: stretch</p>
  <div id="stretch">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
  </div>
</div>

CSS:

#container > div {
  display: -webkit-flex;
  display: -ms-flex;
  display: flex;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  width: 140px;
  height: 140px;
  background: linear-gradient(-45deg, #78ff8c, #b4ffc8);
}

#container > div > div {
  margin: 2px;
  width: 30px;
  min-height: 30px;
  background: linear-gradient(-45deg, #788cff, #b4c8ff);
}

#flex-start {
  -webkit-align-content: flex-start;
  align-content: flex-start;
}

#center {
  -webkit-align-content: center;
  align-content: center;
}

#flex-end {
  -webkit-align-content: flex-end;
  align-content: flex-end;
}

#space-between {
  -webkit-align-content: space-between;
  align-content: space-between;
}

#space-around {
  -webkit-align-content: space-around;
  align-content: space-around;
}

#stretch {
  -webkit-align-content: stretch;
  align-content: stretch;
}

Results in:

规范

浏览器兼容性

参见

• 使用 CSS flexible boxes