ID选择器 | ID selectors
在HTML文档中，CSS ID选择器根据其id属性的值匹配元素。所选元素的ID属性必须与选择器中给定的值完全匹配。
/* The element with id="demo" */
div#demo {
border: red 2px solid;
}语法
#id_value { style properties }请注意，这相当于以下内容attribute selector：
[id=id_value] { style properties }实例
CSS
div#identified {
background-color: skyblue;
}HTML
<div id="identified">This div has a special ID on it!</div>
<div>This is just a regular div.</div>结果
规范
Specification | Status | Comment |
|---|---|---|
Selectors Level 4The definition of 'ID selectors' in that specification. | Working Draft | ? |
Selectors Level 3The definition of 'ID selectors' in that specification. | Recommendation | ? |
CSS Level 2 (Revision 1)The definition of 'ID selectors' in that specification. | Recommendation | ? |
CSS Level 1The definition of 'ID selectors' 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) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
Basic support | ? | ? | (Yes) | ? | ? | ? | ? |
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