box-pack | 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This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.

-moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.

/* Keyword values */
box-pack: start;
box-pack: center;
box-pack: end;
box-pack: justify;
/* Global values */
box-pack: inherit;
box-pack: initial;
box-pack: unset;

The direction of layout depends on the element's orientation: horizontal or vertical.

句法

box-pack property is specified as one of the keyword values listed below.

值

start
center
end
justify: The space is divided evenly in-between each child, with none of the extra space placed before the first child or after the last child. If there is only one child, treat the value as if it were start .

注意事项

The edge of the box designated the start for packing purposes depends on the box's orientation and direction:

	Normal	Reverse
Horizontal	left	right
Vertical	top	bottom

The edge opposite to the start is designated the end .

If the packing is set using the element's pack attribute, then the style is ignored.

形式定义

初始值	`start`
适用于	elements with a CSS `display` value of `-moz-box` , `-moz-inline-box` , `-webkit-box` or `-webkit-inline-box`
继承	no
计算值	如指定
动画类型	discrete

形式句法

start | center | end | justify

范例

Examples of box-pack

div.example {
  border-style: solid;
  display: -moz-box; /* Mozilla */
  display: -webkit-box; /* WebKit */
  /* Make this box taller than the children,
     so there is room for the box-pack */
  height: 300px;
  /* Make this box wide enough to show the contents
     are centered horizontally */
  width: 300px;
  /* Children should be oriented vertically */
  -moz-box-orient: vertical; /* Mozilla */
  -webkit-box-orient: vertical; /* WebKit */
  /* Align children to the horizontal center of this box */
  -moz-box-align: center; /* Mozilla */
  -webkit-box-align: center; /* WebKit */
  /* Pack children to the bottom of this box */
  -moz-box-pack: end;             /* Mozilla */
  -webkit-box-pack: end;          /* WebKit */
}
div.example p {
  /* Make children narrower than their parent,
     so there is room for the box-align */
  width: 200px;
}

<div class="example">
  <p>I will be second from the bottom of div.example, centered horizontally.</p>
  <p>I will be on the bottom of div.example, centered horizontally.</p>
</div>

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-pack` 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： Oct 15, 2020

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句法

值