36 lines
1.1 KiB
HTML
36 lines
1.1 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>CSS - 优先级</title>
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<!-- 一般情况下网站的首页会使用内部样式表 - 首页正常渲染 -->
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<!-- 其他的页面可以共享一个或多个外部样式表 - 代码复用/减少对带宽和流量的使用 -->
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<link rel="stylesheet" href="css/style.css">
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<!-- 不冲突的样式会叠加，有冲突的样式遵循三条原则 -->
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<!-- 1. 就近原则 -->
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<!-- 2. 具体性原则（ID > 类 > 标签 > 通配符） -->
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<!-- 3. 重要性原则 -->
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<style>
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#h1 { color: blue; }
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.h1 { color: green !important; }
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.h1 {
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color: pink !important;
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border: 5px dotted #FFA500;
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width: 300px;
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height: 80px;
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line-height: 80px;
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text-align: center;
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margin-top: 50px;
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padding: 100px 100px;
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}
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h1 { color: red; }
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</style>
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</head>
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<body>
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<!-- 内嵌样式表 / 行内样式表 -->
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<h1 class="a big" style="background-color: #ffff00; font-family: 'courier new'; text-align: center;">Hello, world!</h1>
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<!-- Box Model（盒子模型）-->
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<h1 class="h1" id="h1">Goodbye world!</h1>
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</body>
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</html>
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