CSS选择符权重
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> .box { width: 500px; height: 400px; background: orange; } #wrap { widows: 1000px; height: 300px; background: red; } div { width: 100px; height: 100px; background: purple; } </style> <body> <div class="box" id="wrap"> <h3 class="tit"></h3> </div> </body> </html>
<!--
选择符权重:
id > class > 标签
id 100
class 10
标签 1
包含选择符 为选择符权重之和(.class h3 11)
群组选择符 权重是不变化的,保持自身权重
伪类选择符 10
* 权重 0
内联样式表 1000
-->
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