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@@ -0,0 +1,88 @@
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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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+ .container{
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+ max-width: 980px;
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+ margin: 0 auto;
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+ }
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+ img{
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+ display: none;
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+ width: 100%;
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+ }
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+ @media screen and (min-width:961px){
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+ .img1{
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+ display: block;
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+ }
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+ }
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+ @media screen and (max-width:960px) and (min-width:481px) {
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+ .img2{
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+ display: block;
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+ }
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+ }
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+ @media screen and (max-width:480px) {
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+ .img3{
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+ display: block;
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+ }
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+ .container .content{
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+ flex-wrap: wrap;
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+ }
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+ .container .content section{
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+ width: 100%;
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+ margin-right: 0;
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+ margin-bottom: 20px;
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+ }
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+ .container .content aside{
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+ width: 100%;
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+ }
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+ }
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+ header,nav,footer{
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+ background-color: #ccc;
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+ height: 50px;
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+ color: #fff;
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+ font-size: 30px;
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+ line-height: 50px;
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+ font-weight: bold;
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+ text-align: center;
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+ margin-bottom: 20px;
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+ }
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+ .content{
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+ display: flex;
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+ margin: 20px 0;
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+ }
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+ .content section{
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+ width: 55%;
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+ margin-right: 5%;
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+ height: 200px;
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+ background-color: red;
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+ }
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+ .content aside{
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+ width: 40%;
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+ height: 200px;
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+ background-color: blueviolet;
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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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+ <header>头部</header>
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+ <nav>导航</nav>
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+ <section>
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+ <img class="img1" src="./img/1.jpg" alt="img">
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+ <img class="img2" src="./img/2.jpg" alt="img">
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+ <img class="img3" src="./img/3.jpg" alt="img">
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+ </section>
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+ <div class="content">
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+ <section>IE8 及更早IE版本无法在这些元素中渲染CSS效果，以至于你不能使用 或者其他的HTML5 elements.IE8 及更早IE版本无法在这些元素中渲染CSS效果，以至于你不能使用 或者其他的HTML5 elements.</section>
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+ <aside>IE8 及更早IE版本无法在这些元素中渲染CSS效果，以至于你不能使用 或者其他的HTML5 elements.IE8 及更早IE版本无法在这些元素中渲染CSS效果，以至于你不能使用 或者其他的HTML5 elements.</aside>
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+ </div>
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+ <footer>尾部</footer>
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+ </div>
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+</body>
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+</html>
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