导航
×
   ❮   
HTML CSS JavaScript PHP Go Sass W3C Colors ECMS

CSS 参考手册

CSS 浏览器支持 CSS 选择器 CSS 伪元素 CSS 组合符 CSS 函数 CSS 参考 (听觉) CSS 网页安全字体 CSS 字体回退 CSS 可动画属性 CSS PX 到 EM 转换器 CSS 颜色 CSS 颜色值 CSS 默认值 CSS 实体

CSS 属性

accent-color align-content align-items align-self all animation animation-delay animation-direction animation-duration animation-fill-mode animation-iteration-count animation-name animation-play-state animation-timing-function aspect-ratio backdrop-filter backface-visibility background background-attachment background-blend-mode background-clip background-color background-image background-origin background-position background-position-x background-position-y background-repeat background-size block-size border border-block border-block-color border-block-end border-block-end-color border-block-end-style border-block-end-width border-block-start border-block-start-color border-block-start-style border-block-start-width border-block-style border-block-width border-bottom border-bottom-color border-bottom-left-radius border-bottom-right-radius border-bottom-style border-bottom-width border-collapse border-color border-end-end-radius border-end-start-radius border-image border-image-outset border-image-repeat border-image-slice border-image-source border-image-width border-inline border-inline-color border-inline-end border-inline-end-color border-inline-end-style border-inline-end-width border-inline-start border-inline-start-color border-inline-start-style border-inline-start-width border-inline-style border-inline-width border-left border-left-color border-left-style border-left-width border-radius border-right border-right-color border-right-style border-right-width border-spacing border-start-end-radius border-start-start-radius border-style border-top border-top-color border-top-left-radius border-top-right-radius border-top-style border-top-width border-width bottom box-decoration-break box-reflect box-shadow box-sizing break-after break-before break-inside caption-side caret-color @charset clear clip clip-path color color-scheme column-count column-fill column-gap column-rule column-rule-color column-rule-style column-rule-width column-span column-width columns content counter-increment counter-reset counter-set cursor direction display empty-cells filter flex flex-basis flex-direction flex-flow flex-grow flex-shrink flex-wrap float font @font-face font-family font-feature-settings font-kerning font-size font-size-adjust font-stretch font-style font-variant font-variant-caps font-weight gap grid grid-area grid-auto-columns grid-auto-flow grid-auto-rows grid-column grid-column-end grid-column-start grid-row grid-row-end grid-row-start grid-template grid-template-areas grid-template-columns grid-template-rows hanging-punctuation height hyphens hyphenate-character image-rendering @import initial-letter inline-size inset inset-block inset-block-end inset-block-start inset-inline inset-inline-end inset-inline-start isolation justify-content justify-items justify-self @keyframes left letter-spacing line-height list-style list-style-image list-style-position list-style-type margin margin-block margin-block-end margin-block-start margin-bottom margin-inline margin-inline-end margin-inline-start margin-left margin-right margin-top marker marker-end marker-mid marker-start mask mask-clip mask-composite mask-image mask-mode mask-origin mask-position mask-repeat mask-size mask-type max-height max-width @media max-block-size max-inline-size min-block-size min-inline-size min-height min-width mix-blend-mode object-fit object-position offset offset-anchor offset-distance offset-path offset-position offset-rotate opacity order orphans outline outline-color outline-offset outline-style outline-width overflow overflow-anchor overflow-wrap overflow-x overflow-y overscroll-behavior overscroll-behavior-block overscroll-behavior-inline overscroll-behavior-x overscroll-behavior-y padding padding-block padding-block-end padding-block-start padding-bottom padding-inline padding-inline-end padding-inline-start padding-left padding-right padding-top page-break-after page-break-before page-break-inside paint-order perspective perspective-origin place-content place-items place-self pointer-events position @property quotes resize right rotate row-gap scale scroll-behavior scroll-margin scroll-margin-block scroll-margin-block-end scroll-margin-block-start scroll-margin-bottom scroll-margin-inline scroll-margin-inline-end scroll-margin-inline-start scroll-margin-left scroll-margin-right scroll-margin-top scroll-padding scroll-padding-block scroll-padding-block-end scroll-padding-block-start scroll-padding-bottom scroll-padding-inline scroll-padding-inline-end scroll-padding-inline-start scroll-padding-left scroll-padding-right scroll-padding-top scroll-snap-align scroll-snap-type scrollbar-color scroll-snap-stop tab-size table-layout text-align text-align-last text-decoration text-decoration-color text-decoration-line text-decoration-style text-decoration-thickness text-emphasis text-emphasis-color text-emphasis-position text-emphasis-style text-indent text-justify text-orientation text-overflow text-shadow text-transform text-underline-offset text-underline-position top transform transform-origin transform-style transition transition-delay transition-duration transition-property transition-timing-function translate unicode-bidi user-select vertical-align visibility white-space widows width word-break word-spacing word-wrap writing-mode z-index zoom

CSS background-image 属性


实例

为<body> 元素设置 background-image

body {
 background-image: url("paper.gif");
 background-color: #cccccc;
}
亲自试一试 »

实例

为<body> 元素设置两个背景图像

body {
  background-image: url("img_tree.gif"), url("paper.gif");
  background-color: #cccccc;
}
亲自试一试 »

更多“自己尝试”的例子见下文。


定义和用法

background-image 属性为元素设置一个或多个背景图像。

默认情况下,背景图像放置在元素的左上角,并沿垂直和水平方向重复。

提示:元素的背景是元素的总大小,包括内边距和边框(但不包括外边距)。

提示: 始终设置一个 background-color,以便在图像不可用时使用。

查看演示 ❯

默认值 none
继承 no
可动画 否。 阅读关于可动画属性
版本 CSS1 + CSS3 中的新值
JavaScript 语法 object.style.backgroundImage="url(img_tree.gif)" 尝试一下

浏览器支持

表中的数字指定了完全支持该属性的第一个浏览器版本。

属性
background-image 1.0 4.0 1.0 1.0 3.5

CSS 语法

background-image: url|none|initial|inherit;

属性值

描述 演示
url('URL') 图像的 URL。要指定多个图像,请用逗号分隔 URL。 演示 ❯
none 不显示背景图像。这是默认值
conic-gradient() 将圆锥渐变设置为背景图像。定义至少两种颜色 演示 ❯
linear-gradient() 将线性渐变设置为背景图像。定义至少两种颜色(从上到下) 演示 ❯
radial-gradient() 将径向渐变设置为背景图像。定义至少两种颜色(从中心到边缘) 演示 ❯
repeating-conic-gradient() 重复锥形渐变 演示 ❯
repeating-linear-gradient() 重复线性渐变 演示 ❯
repeating-radial-gradient() 重复径向渐变 演示 ❯
initial 将此属性设置为其默认值。阅读关于initial
inherit 从其父元素继承此属性。阅读关于inherit

更多实例

实例

为<body> 元素设置两个背景图像。让第一个图像仅显示一次(不重复),让第二个图像重复

body {
  background-image: url("img_tree.gif"), url("paper.gif");
  background-repeat: no-repeat, repeat;
  background-color: #cccccc;
}
亲自试一试 »

实例

使用不同的背景属性创建“英雄”图片

.hero-image {
  background-image: url("photographer.jpg"); /* 使用的图片 */
  background-color: #cccccc; /* 如果图片不可用时使用 */
  height: 500px; /* 您必须指定高度 */
  background-position: center; /* 居中图片 */
  background-repeat: no-repeat; /* 不重复图片 */
  background-size: cover; /* 将背景图片缩放到覆盖整个容器 */
}
亲自试一试 »

实例

为<div> 元素设置线性渐变(两种颜色)作为背景图像

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: linear-gradient(red, yellow);
}
亲自试一试 »

实例

为<div> 元素设置线性渐变(三种颜色)作为背景图像

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: linear-gradient(red, yellow, green);
}
亲自试一试 »

实例

repeating-linear-gradient() 函数用于重复线性渐变

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: repeating-linear-gradient(red, yellow 10%, green 20%);
}
亲自试一试 »

实例

为<div> 元素设置径向渐变(两种颜色)作为背景图像

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: radial-gradient(red, yellow);
}
亲自试一试 »

实例

为<div> 元素设置径向渐变(三种颜色)作为背景图像

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: radial-gradient(red, yellow, green);
}
亲自试一试 »

实例

repeating-radial-gradient() 函数用于重复径向渐变

#grad1 {
  height: 200px;
  background-color: #cccccc;
  background-image: repeating-radial-gradient(red, yellow 10%, green 20%);
}
亲自试一试 »

相关页面

CSS 教程:CSS 背景CSS 背景(高级)CSS 渐变

HTML DOM 参考:backgroundImage 属性


Copyright ©2020-2026 freew3c.com All Rights Reserved 提供的内容仅用于学习和测试,不保证内容的正确性。