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@@ -0,0 +1,71 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <style>
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+ body{
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+ margin: 0;
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+ }
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+ .nav-content{
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+ background-color: blue;
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+ padding: 20px;
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+ color: white;
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+ }
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+ .foot-content{
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+ background-color: #999;
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+ padding: 20px;
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+ }
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+ .main-content::after{
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+ content: "";
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+ display: block;
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+ clear: both;
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+ }
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+ .left,.center,.right{
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+ float: left;
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+ height: 200px;
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+ }
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+ .left{
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+ width: 20%;
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+ background-color: green;
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+ overflow: hidden;
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+ }
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+ .center{
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+ width: 60%;
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+ background-color: red;
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+ overflow: hidden;
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+ }
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+ .right{
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+ width: 20%;
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+ background-color: yellow;
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+ overflow: hidden;
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+ }
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+ </style>
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+</head>
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+<body>
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+ <div class="container">
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+ <div class="nav-content">
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+ <h1>我的网页</h1>
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+ </div>
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+ <div class="main-content">
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+ <div class="left">
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+ <h2>左侧边栏</h2>
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+ <p>这是左侧边栏的内容。</p>
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+ </div>
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+ <div class="center">
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+ <h2>主要内容</h2>
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+ <p>这是网页的主要内容区域，您可以在这里添加大量的文本、图片或其他元素。</p>
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+ <p>比如，这是一段额外的描述性文字，用于展示内容的丰富性。</p>
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+ </div>
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+ <div class="right">
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+ <h2>右侧边栏</h2>
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+ <p>这里可以放置一些右侧边栏的内容，比如广告、最新动态或相关链接。</p>
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+ </div>
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+ </div>
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+ <div class="foot-content">
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+ <span>版权所有 © 2024 我的网页</span>
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+ </div>
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+ </div>
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+</body>
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+</html>
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