怎么样理解CSS样式表权重与优先级-天涯论坛

tw4ld6 发表于 2024-6-30 08:24:55

怎么样理解CSS样式表权重与优先级

<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">怎样</span>理解CSS的权重，CSS是对样式的修饰，权重<span style="color: black;">表率</span>着某种级别，权重决定了你css规则<span style="color: black;">怎么样</span>被浏览器解析直到生效，css权重关系到你的css规则是<span style="color: black;">怎么样</span><span style="color: black;">表示</span>的。权重比较时，<span style="color: black;">能够</span>比较权重值，<span style="color: black;">然则</span><span style="color: black;">亦</span>有例外的<span style="color: black;">状况</span>：多层嵌套时，权重的比较<span style="color: black;">办法</span>有什么<span style="color: black;">区别</span>呢？请看完本文就<span style="color: black;">晓得</span>了，彻底<span style="color: black;">把握</span>CSS权重。</p>
<h2 style="color: black; text-align: left; margin-bottom: 10px;">CSS权重规则1</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">同<span style="color: black;">同样</span>式<span style="color: black;">倘若</span>设置多次（<span style="color: black;">便是</span><span style="color: black;">一样</span>的属性，<span style="color: black;">然则</span>属性值<span style="color: black;">区别</span>，写在<span style="color: black;">区别</span>的样式表中），权重高的样式会覆盖权重低的样式；</p>
<h2 style="color: black; text-align: left; margin-bottom: 10px;">CSS权重规则2</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">区别</span>的样式<span style="color: black;">区别</span>的<span style="color: black;">选取</span>器，样式效果会进行叠加，<span style="color: black;">例如</span>一个div，行内样式表设置了宽400px，内部样式表设置了高100px，<span style="color: black;">外边</span>样式表设置了背景颜色为blue，<span style="color: black;">那样</span><span style="color: black;">最后</span><span style="color: black;">表示</span>为：宽400px，高100px，背景颜色为green的一个长方形。</p>
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<div style="color: black; text-align: left; margin-bottom: 10px;"><!DOCTYPE html>
   <html lang="en">
   <head>
   <meta charset="UTF-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Document</title>
   
   <link rel="stylesheet" href="css/yanse.css">
   
   <style>
   div{
   height: 100px;
   }
   </style>

   </head>
   <body>
   
   <div style="width:400px;></div>
   </body>
   </html></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">外边</span>样式表yanse.css</p>
<div style="color: black; text-align: left; margin-bottom: 10px;">div{
   bac<span style="color: black;">公斤</span>round-color: green;
   }</div>
<h2 style="color: black; text-align: left; margin-bottom: 10px;"><span style="color: black;">第1</span>步：行内>内部><span style="color: black;">外边</span></h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">首要</span>看一下CSS的3种样式表的权重（优先级）：行内>内部><span style="color: black;">外边</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">规则：多个样式表修饰同一个元素的时候,<span style="color: black;">思虑</span>的是代码从上向下执行，后面的代码把前面的代码覆盖了，就近原则，谁挨着近实现的是谁的样式。</p>
<h3 style="color: black; text-align: left; margin-bottom: 10px;">比较<span style="color: black;">办法</span></h3>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以下为HTML代码</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><!DOCTYPE html>
   <html lang="en">
   <head>
   <meta charset="UTF-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Document</title>
   
   <link rel="stylesheet" href="css/waibu.css">
   
   <style>
   div{
   width:200px;
   height: 200px;
   bac<span style="color: black;">公斤</span>round-color: yellow;
   }
   </style>

   </head>
   <body>
   
   
   <div ></div>
   </body>
   </html></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以下为<span style="color: black;">外边</span>样式表waibu.css文件</p>
<div style="color: black; text-align: left; margin-bottom: 10px;">div{
   width:300px;
   height:300px;
   bac<span style="color: black;">公斤</span>r</div>

流星的美 发表于 2024-8-21 16:39:33

回顾历史，我们感慨万千；放眼未来，我们信心百倍。

nqkk58 发表于 2024-10-16 02:46:38

你的见解独到，让我受益匪浅，非常感谢。

j8typz 发表于 2024-10-17 01:33:53

我深感你的理解与共鸣，愿对话长流。

4lqedz 发表于 2024-11-7 14:01:38

楼主发的这篇帖子，我觉得非常有道理。

nykek5i 发表于 2024-11-9 20:08:51

哈哈、笑死我了、太搞笑了吧等。

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怎么样理解CSS样式表权重与优先级