Universal selectors - CSS: Cascading Style Sheets 编辑
The CSS universal selector (*
) matches elements of any type.
/* Selects all elements */
* {
color: green;
}
Beginning with CSS3, the asterisk may be used in combination with namespaces
:
ns|*
- matches all elements in namespace ns*|*
- matches all elements|*
- matches all elements without any declared namespace
Syntax
* { style properties }
The asterisk is optional with simple selectors. For instance, *.warning
and .warning
are equivalent.
Examples
CSS
* [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;
}
HTML
<p class="warning">
<span lang="en-us">A green span</span> in a red paragraph.
</p>
<p id="maincontent" lang="en-gb">
<span class="warning">A red span</span> in a green paragraph.
</p>
Result
Specifications
Specification | Status | Comment |
---|---|---|
Selectors Level 4 The definition of 'universal selector' in that specification. | Working Draft | No changes |
Selectors Level 3 The 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 |
Browser compatibility
BCD tables only load in the browser
See also
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论