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@@ -0,0 +1,110 @@
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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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+ * {
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+ margin: 0;
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+ padding: 0;
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+ }
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+ h3 {
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+ width: 100%;
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+ height: 50px;
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+ font-size: 24px;
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+ font-weight: bold;
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+ line-height: 50px;
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+ text-align: center;
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+ background: #ccc;
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+ margin-bottom: 10px;
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+ }
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+ #imgBox {
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+ width: 100%;
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+ height: 300px;
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+ background: url('./images/3.jpg') no-repeat;
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+ background-position: center;
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+ }
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+ #main {
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+ width: 100%;
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+ margin: 10px auto;
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+ }
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+ .sideBar {
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+ width: 100%;
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+ height: 200px;
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+ background: #0f0;
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+ }
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+
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+ .container {
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+ width: 100%;
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+ height: 200px;
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+ background: plum;
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+ }
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+ @media screen and (min-width:480px) {
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+ #imgBox {
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+ width: 100%;
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+ height: 500px;
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+ background: url('./images/1.jpg') no-repeat;
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+ background-position: center;
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+ }
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+ #main {
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+ width: 100%;
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+ margin: 10px auto;
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+ overflow: hidden;
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+ }
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+ .sideBar {
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+ width: 65vw;
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+ height: 200px;
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+ background: #0f0;
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+ float: left;
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+ }
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+
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+ .container {
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+ width: 30vw;
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+ height: 200px;
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+ background: plum;
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+ float: right;
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+ }
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+
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+ }
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+ @media screen and (min-width:960px) {
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+ #imgBox {
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+ width: 100%;
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+ height: 600px;
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+ background: url('./images/2.jpg') no-repeat;
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+ background-position: center;
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+ background-size: cover;
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+ }
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+ #main {
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+ width: 100%;
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+ margin: 25px auto;
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+ overflow: hidden;
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+ }
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+ .sideBar {
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+ width: 65vw;
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+ height: 200px;
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+ background: #ff0;
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+ float: left;
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+ }
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+
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+ .container {
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+ width: 30vw;
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+ height: 200px;
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+ background: plum;
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+ float: right;
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+ }
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+
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+ }
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+ </style>
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+</head>
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+<body>
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+ <h3>页眉</h3>
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+ <h3>导航</h3>
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+ <div id="imgBox"></div>
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+ <div id="main">
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+ <div class="sideBar"></div>
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+ <div class="container"></div>
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+ </div>
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+ <h3>页尾</h3>
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+</body>
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+</html>
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