通用选择器 | Universal selectors (Selectors)

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通用选择器 | Universal selectors (Selectors) - CSS 中文开发手册

CSS 通用选择器（*）匹配任何类型的元素。

* {
  color: green;
}

从CSS3开始，星号可以与namespaces结合使用：

ns|*- 匹配命名空间ns中的所有元素 *|* - 匹配所有元素|*-匹配所有没有声明命名空间的元素

语法

* { style properties }

星号对于简单的选择器是可选的。例如，*.warning和.warning是等价的。

实例

* [lang^=en] {
  color: green;
}

*.warning {
  color: red;
}

*#maincontent {
  border: 1px solid blue;
}

.floating {
  float: left
}

/* automatically clear the next sibling after a floating element */
.floating + * {
  clear: left;
}

<p class="warning">
  <span lang="en-us">A green span</span> in a red paragraph.</span>
</p>
<p id="maincontent" lang="en-gb">
  <span class="warning">A red span</span> in a green paragraph.</span>
</p>

规范

Specification	Status	Comment
Selectors Level 4The definition of 'universal selector' in that specification.	Working Draft	No changes
Selectors Level 3The definition of 'universal selector' in that specification.	Recommendation	Defines behavior regarding namespaces and adds hint that omitting the selector is allowed within pseudo-elements
CSS Level 2 (Revision 1)The definition of 'universal selector' in that specification.	Recommendation	Initial definition

浏览器兼容性

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	(Yes)	(Yes)	1.0 (1.7 or earlier)	7	(Yes)	(Yes)
Combination with namespace support	(Yes)	(Yes)	1.0 (1.7 or earlier)	9	8	1.3

Feature	Android	Chrome for Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	?	(Yes)	1.0 (1)	?	?	?
Combination with namespace support	?	?	(Yes)	?	?	?	?

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