background-repeat

在此页

句法
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

background-repeat CSS property sets how background images are repeated. A background image can be repeated along the horizontal and vertical axes, or not repeated at all.

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.

By default, the repeated images are clipped to the size of the element, but they can be scaled to fit (using round ) or evenly distributed from end to end (using space ).

句法

/* Keyword values */
background-repeat: repeat-x;
background-repeat: repeat-y;
background-repeat: repeat;
background-repeat: space;
background-repeat: round;
background-repeat: no-repeat;
/* Two-value syntax: horizontal | vertical */
background-repeat: repeat space;
background-repeat: repeat repeat;
background-repeat: round space;
background-repeat: no-repeat round;
/* Global values */
background-repeat: inherit;
background-repeat: initial;
background-repeat: unset;

值

<repeat-style>

形式定义

初始值	`repeat`
适用于	所有元素。它还适用于 `::first-letter` and `::first-line` .
继承	no
计算值	a list, each item consisting of two keywords, one per dimension
动画类型	discrete

形式句法

<repeat-style>#where 
<repeat-style> = repeat-x | repeat-y | [ repeat | space | round | no-repeat ]{1,2}

范例

Setting background-repeat

HTML

<ol>
  <li>no-repeat
    <div class="one"></div>
  </li>
  <li>repeat
    <div class="two"></div>
  </li>
  <li>repeat-x
    <div class="three"></div>
  </li>
  <li>repeat-y
    <div class="four"></div>
  </li>
  <li>space
    <div class="five"></div>
  </li>
  <li>round
    <div class="six"></div>
  </li>
  <li>repeat-x, repeat-y (multiple images)
    <div class="seven"></div>
  </li>
</ol>

CSS

/* Shared for all DIVS in example */
ol,
li {
  margin: 0;
  padding: 0;
}
li {
  margin-bottom: 12px;
}
div {
    background-image: url(https://mdn.mozillademos.org/files/12005/starsolid.gif);
    width: 160px;
    height: 70px;
}
/* Background repeats */
.one {
  background-repeat: no-repeat;
}
.two {
  background-repeat: repeat;
}
.three {
  background-repeat: repeat-x;
}
.four {
  background-repeat: repeat-y;
}
.five {
  background-repeat: space;
}
.six {
  background-repeat: round;
}
/* Multiple images */
.seven {
  background-image:  url(https://mdn.mozillademos.org/files/12005/starsolid.gif),
                     url(https://developer.cdn.mozilla.net/media/redesign/img/favicon32.png);
  background-repeat: repeat-x,
                     repeat-y;
  height: 144px;
}

结果

In this example, each list item is matched with a different value of background-repeat .

规范

规范	状态	注释
CSS Backgrounds and Borders Module Level 3 The definition of 'background-repeat' in that specification.	候选推荐	Adds support for multiple background images, the two-value syntax allowing distinct repetition behavior for the horizontal and vertical directions, the `space` and `round` keywords, and for backgrounds on inline-level elements by precisely defining the background painting area.
CSS Level 2 (Revision 1) The definition of 'background-repeat' in that specification.	推荐	No significant changes.
CSS Level 1 The definition of 'background-repeat' in that specification.	推荐	初始定义。

浏览器兼容性

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-repeat`	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 1	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 1	Samsung Internet Android 完整支持 1.0
`round` and `space` 关键词	Chrome 完整支持 30	Edge 完整支持 12	Firefox 完整支持 49	IE 完整支持 9	Opera 完整支持 17 完整支持 17 不支持 10.5 — 15	Safari 完整支持 7	WebView Android 完整支持 ≤37	Chrome Android 完整支持 30	Firefox Android 完整支持 49	Opera Android 完整支持 18	Safari iOS 完整支持 8	Samsung Internet Android 完整支持 2.0
Two-value syntax (different values for x & y directions)	Chrome 完整支持 3	Edge 完整支持 12	Firefox 完整支持 13	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 14	Opera Android 完整支持 11	Safari iOS 完整支持 4	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： Jul 16, 2020

Single value	Two-value equivalent
`repeat-x`	`repeat no-repeat`
`repeat-y`	`no-repeat repeat`
`repeat`	`repeat repeat`
`space`	`space space`
`round`	`round round`
`no-repeat`	`no-repeat no-repeat`

`repeat`	The image is repeated as much as needed to cover the whole background image painting area. The last image will be clipped if it doesn't fit.
`space`	The image is repeated as much as possible without clipping. The first and last images are pinned to either side of the element, and whitespace is distributed evenly between the images. The `background-position` property is ignored unless only one image can be displayed without clipping. The only case where clipping happens using `space` is when there isn't enough room to display one image.
`round`	As the allowed space increases in size, the repeated images will stretch (leaving no gaps) until there is room (space left >= half of the image width) for another one to be added. When the next image is added, all of the current ones compress to allow room. Example: An image with an original width of 260px, repeated three times, might stretch until each repetition is 300px wide, and then another image will be added. They will then compress to 225px.
`no-repeat`	The image is not repeated (and hence the background image painting area will not necessarily be entirely covered). The position of the non-repeated background image is defined by the `background-position` CSS property.

在此页

句法

值