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@@ -0,0 +1,109 @@
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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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+ .box {
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+ width: 800px;
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+ height: 800px;
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+ border: 2px solid #000;
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+ }
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+ #part1 {
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+ width: 200px;
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+ height: 200px;
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+ color: #f00;
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+ font-size: 35px;
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+ font-weight: bold;
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+ background: #ff0;
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+ display: inline-block;
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+ /*想让文字 在 已知宽高的盒子 内 居中*/
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+ text-align: center;
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+ /* 间隔 */
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+ line-height: 200px;
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+ }
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+ #part1:hover {
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+ color: #fff;
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+ background-color: #000;
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+
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+ }
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+ #part2 {
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+ width: 200px;
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+ height: 200px;
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+ color: #ff0;
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+ font-size: 35px;
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+ font-weight: bold;
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+ background: #00f;
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+ display: inline-block;
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+ /*想让文字 在 已知宽高的盒子 内 居中*/
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+ text-align: center;
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+ /* 间隔 */
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+ line-height: 200px;
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+ }
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+ /*
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+
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+ 将块级元素转成行内元素
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+ display:inline
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+ 将元素转成行内块元素
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+ display:inline-block
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+ 将元素转成行块元素
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+ display: block;
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+ */
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+ span {
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+ font-size: 22px;
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+ }
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+ /* 伪类选择器
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+ :hover 滑过
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+ :first-child 第一个子类
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+ :last-child 最后一个子类
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+ :nth-child(n) 自定义子类
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+ even 偶数 2n
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+ odd 奇数 2n+1
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+ */
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+ ul {
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+ /* 取消列表默认样式 */
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+ list-style: none;
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+ }
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+ ul li a {
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+ /* 取消a标签的默认样式 */
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+ text-decoration: none;
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+ color: #000;
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+ }
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+ ul li:first-child a {
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+ color: plum;
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+ }
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+ ul li:last-child a {
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+ color: blue;
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+ }
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+ ul li:nth-child(2n+1) a {
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+ color: #0f0;
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+ }
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+ ul li:nth-child(2n+1):hover a {
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+ color: #ff0;
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+ }
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+ ul li:hover a {
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+ color: red;
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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="box">
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+ <div id="part1">
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+ 你好
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+ </div>
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+ <div id="part2">
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+ <span>1</span>
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+ <span>2</span>
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+ </div>
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+ <ul>
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+ <li><a href="">你好</a></li>
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+ <li><a href="">你好</a></li>
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+ <li><a href="">你好</a></li>
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+ <li><a href="">你好</a></li>
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+ <li><a href="">你好</a></li>
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+ <li><a href="">你好</a></li>
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+ </ul>
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+ </div>
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+</body>
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+</html>
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