width

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

可以使用 width CSS @media 基于视口宽度(或页面框,用于分页媒体)应用样式。

语法

width特性被指定为<length>,表示 viewport 宽度的值。这是一个范围特性,也就是说,你也可以使用前缀 min-widthmax-width 分别查询最小值和最大值。

示例

HTML

html
<div>改变 viewport 的宽度的同时,观察这个元素的变化。</div>

CSS

css
/* 精确宽度 */
@media (width: 360px) {
  div {
    color: red;
  }
}

/* 最小宽度 */
@media (min-width: 35rem) {
  div {
    background: yellow;
  }
}

/* 最大宽度 */
@media (max-width: 50rem) {
  div {
    border: 2px solid blue;
  }
}

结果

规范

Specification
Media Queries Level 4
# width

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
width media feature

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support