background-attachment

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句法
形式定义
形式句法
范例
规范
浏览器兼容性
另请参阅
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background-attachment CSS property sets whether a background image's position is fixed within the viewport , or scrolls with its containing block.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

句法

/* Keyword values */
background-attachment: scroll;
background-attachment: fixed;
background-attachment: local;
/* Global values */
background-attachment: inherit;
background-attachment: initial;
background-attachment: unset;

background-attachment property is specified as one of the keyword values from the list below.

值

fixed: The background is fixed relative to the viewport. Even if an element has a scrolling mechanism, the background doesn't move with the element. (This is not compatible with background-clip: text .)
local
scroll

形式定义

初始值	`scroll`
适用于	所有元素。它还适用于 `::first-letter` and `::first-line` .
继承	no
计算值	如指定
动画类型	discrete

形式句法

<attachment>#where 
<attachment> = scroll | fixed | local

范例

Simple example

HTML

<p>
  There were doors all round the hall, but they were all locked; and when
  Alice had been all the way down one side and up the other, trying every
  door, she walked sadly down the middle, wondering how she was ever to
  get out again.
</p>

CSS

p {
  background-image: url("https://mdn.mozillademos.org/files/12057/starsolid.gif");
  background-attachment: fixed;
}

结果

Multiple background images

This property supports multiple background images. You can specify a different <attachment> for each background, separated by commas. Each image is matched with the corresponding attachment type, from first specified to last.

HTML

<p>
  There were doors all round the hall, but they were all locked; and when
  Alice had been all the way down one side and up the other, trying every
  door, she walked sadly down the middle, wondering how she was ever to
  get out again.
  Suddenly she came upon a little three-legged table, all made of solid
  glass; there was nothing on it except a tiny golden key, and Alice's
  first thought was that it might belong to one of the doors of the hall;
  but, alas! either the locks were too large, or the key was too small,
  but at any rate it would not open any of them. However, on the second
  time round, she came upon a low curtain she had not noticed before, and
  behind it was a little door about fifteen inches high: she tried the
  little golden key in the lock, and to her great delight it fitted!
</p>

CSS

p {
  background-image: url("https://mdn.mozillademos.org/files/12057/starsolid.gif"),
      url("https://mdn.mozillademos.org/files/12059/startransparent.gif");
  background-attachment: fixed, scroll;
  background-repeat: no-repeat, repeat-y;
}

结果

规范

规范	状态	注释
CSS Backgrounds and Borders Module Level 3 The definition of 'background-attachment' in that specification.	候选推荐	The shorthand property has been extended to support multiple backgrounds and the `local` 值。
CSS Level 2 (Revision 1) The definition of 'background-attachment' in that specification.	推荐	No significant change.
CSS Level 1 The definition of 'background-attachment' in that specification.	推荐	No significant change.

浏览器兼容性

The compatibility table in 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
`background-attachment`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 4	Opera 完整支持 3.5	Safari 完整支持 1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 3.2	Samsung Internet Android 完整支持 1.0
`local`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 25	IE 完整支持 9	Opera 完整支持 10.5	Safari 完整支持 5	WebView Android 完整支持 37	Chrome Android 完整支持 18	Firefox Android 完整支持 25	Opera Android 完整支持 14	Safari iOS 完整支持 4.2	Samsung Internet Android 完整支持 1.0
Multiple backgrounds	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 3.6	IE 完整支持 9	Opera 完整支持 10.5	Safari 完整支持 1.3	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 11	Safari iOS 完整支持 3.2	Samsung Internet Android 完整支持 1.0

图例

完整支持

另请参阅

Using multiple backgrounds

元数据

最后修改： Aug 10, 2020

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句法

值

形式定义

形式句法

范例

Simple example

HTML

CSS

结果

Multiple background images

HTML

CSS

结果

规范

浏览器兼容性

图例

另请参阅

相关话题