box-flex | CSS

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句法
注意事项
形式定义
形式句法
范例
规范
浏览器兼容性
另请参阅
相关话题

非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

This is a property for controlling parts of the XUL box model. It does not match either the old CSS Flexible Box Layout Module drafts for ' box-flex ' (which were based on this property) or the behavior of ' -webkit-box-flex ' (which is based on those drafts). See flexbox for information about the current standard.

-moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.

/* <number> values */
-moz-box-flex: 0;
-moz-box-flex: 2;
-moz-box-flex: 3.5;
-webkit-box-flex: 0;
-webkit-box-flex: 2;
-webkit-box-flex: 3.5;
/* Global values */
-moz-box-flex: inherit;
-moz-box-flex: initial;
-moz-box-flex: unset;
-webkit-box-flex: inherit;
-webkit-box-flex: initial;
-webkit-box-flex: unset;

句法

box-flex property is specified as a <number> . If the value is 0, the box does not grow. If it is greater than 0, the box grows to fill a proportion of the available space.

注意事项

The containing box allocates the available extra space in proportion to the flex value of each of the content elements.

Content elements that have zero flex do not grow.

If only one content element has nonzero flex, then it grows to fill the available space.

Content elements that have the same flex grow by the same absolute amounts.

If the flex value is set using the element's flex attribute, then the style is ignored.

To make XUL elements in a containing box the same size, set the containing box's equalsize attribute to the value always . This attribute does not have a corresponding CSS property.

A trick to make all content elements in a containing box the same size, is to give them all a fixed size (e.g. height: 0 ), and the same box-flex value greater than zero (e.g. -moz-box-flex: 1 ).

形式定义

初始值	`0`
适用于	elements that are direct children of an element with a CSS `display` value of `-moz-box` or `-moz-inline-box` or `-webkit-box` or `-webkit-inline-box`
继承	no
计算值	如指定
动画类型	discrete

形式句法

<number>

范例

Setting box-flex

<!DOCTYPE html>
<html>
  <head>
    <title>-moz-box-flex example</title>
    <style>
      div.example {
        display: -moz-box;
        display: -webkit-box;
        border: 1px solid black;
        width: 100%;
      }
      div.example > p:nth-child(1) {
        -moz-box-flex: 1;       /* Mozilla */
        -webkit-box-flex: 1;    /* WebKit */
        border: 1px solid black;
      }
      div.example > p:nth-child(2) {
        -moz-box-flex: 0;       /* Mozilla */
        -webkit-box-flex: 0;    /* WebKit */
        border: 1px solid black;
      }
    </style>
  </head>
  <body>
    <div class="example">
      <p>I will expand to fill extra space</p>
      <p>I will not expand</p>
    </div>
  </body>
</html>

规范

Not part of any standard.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`box-flex` 弃用非标	Chrome 完整支持 1 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Edge 完整支持 12 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Firefox 完整支持 1 Prefixed 完整支持 1 Prefixed Prefixed Implemented with the vendor prefix: -moz- preference (needs to be set to ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 完整支持 15 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Safari 完整支持 3 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit- 不支持 1.1 — 3 Prefixed Prefixed Implemented with the vendor prefix: -khtml-	WebView Android 完整支持 ≤37 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Chrome Android 完整支持 18 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Firefox Android 完整支持 4 Prefixed 完整支持 4 Prefixed Prefixed Implemented with the vendor prefix: -moz- preference (needs to be set to ). To change preferences in Firefox, visit about:config.	Opera Android 完整支持 14 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Safari iOS 完整支持 1 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-	Samsung Internet Android 完整支持 1.0 Prefixed 完整支持 Prefixed Prefixed Implemented with the vendor prefix: -webkit-

图例

完整支持
不支持
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。
用户必须明确启用此特征。
要求使用供应商前缀或不同名称。

另请参阅

元数据

最后修改： Jul 28, 2020

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句法