flex-grow

CSSflex-grow属性定义弹性盒子项（flex item）的拉伸因子。

/* <number> values */
flex-grow: 3;
flex-grow: 0.6;

/* Global values */
flex-grow: inherit;
flex-grow: initial;
flex-grow: unset;

初始值	0
适用于	弹性项目，包括流入的伪元素
遗传	没有
媒体	视觉
计算值	作为指定
动画类型	一个号码
规范的顺序	形式语法定义的独特的非模糊顺序

更多属性和信息请参见使用 CSS 弹性盒子。

语法

CSS 属性值定义语法: <number>

取值

<number>参见<number>。负值无效。

形式语法

<number>

例

HTML

<h4>This is a Flex-Grow</h4>
<h5>A,B,C and F are flex-grow:1 . D and E are flex-grow:2 .</h5>
<div id="content">
  <div class="box" style="background-color:red;">A</div>
  <div class="box" style="background-color:lightblue;">B</div>
  <div class="box" style="background-color:yellow;">C</div>
  <div class="box1" style="background-color:brown;">D</div>
  <div class="box1" style="background-color:lightgreen;">E</div>
  <div class="box" style="background-color:brown;">F</div>
</div>

CSS

#content {
  -ms-box-orient: horizontal;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -moz-flex;
  display: -webkit-flex;
  display: flex;
    
  -webkit-justify-content: space-around;
  justify-content: space-around;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  -webkit-align-items: stretch;
  align-items: stretch;
}

.box {
  flex-grow: 1;
  border: 3px solid rgba(0,0,0,.2
}

.box1 {
  flex-grow: 2;
  border: 3px solid rgba(0,0,0,.2
}

结果

规范

Specification	Status	Comment
CSS Flexible Box Layout ModuleThe definition of 'flex-grow' in that specification.	Candidate Recommendation	Initial definition

浏览器兼容性

Feature	Firefox (Gecko)	Chrome	Edge	Internet Explorer	Opera	Safari
Basic support	18.0 (18.0)1	21.0-webkit	(Yes)-webkit (Yes)	113	12.10	6.1-webkit
< 0 animate	32.0 (32.0)2	49.0	?	?	No support	No support

Feature	Firefox Mobile (Gecko)	Android	Edge	IE Phone	Opera Mobile	Safari Mobile
Basic support	18.0 (18.0)1	?	(Yes)-webkit (Yes)	No support	12.10	No support
< 0 animate	32.0 (32.0)2	?	?	?	No support	No support