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feat: Add CSS layout exercises and corresponding HTML files

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- Created multiple exercises under the CSS layout section, including:
  - Final page layout with CSS styles and HTML structure.
  - Display and flow concepts with examples of block, inline, and none display types.
  - Selectors and pseudo-classes with practical examples.
  - Overflow and sizing handling in CSS.
  - Grid layout basics for two-dimensional layouts.
  - Fixed and sticky positioning examples.
  - Centering techniques for common layout scenarios.

- Added README files for each exercise to outline objectives and file structures.
- Updated main README to include new sections and usage instructions.
This commit is contained in:
chali
2026-03-09 14:16:22 +08:00
commit 4495ae0e28
85 changed files with 2566 additions and 0 deletions
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02-css-layout/07-selectors-and-pseudo-classes/README.md Normal file
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# 练习 7：组合选择器与伪类
## 目标
补齐后代选择器、子代选择器、`:hover`、`:first-child`。
## 文件
- [starter.html](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/07-selectors-and-pseudo-classes/starter.html)
- [starter.css](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/07-selectors-and-pseudo-classes/starter.css)
- [answer.html](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/07-selectors-and-pseudo-classes/answer.html)
- [answer.css](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/07-selectors-and-pseudo-classes/answer.css)

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02-css-layout/07-selectors-and-pseudo-classes/answer.css Normal file
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body {
margin: 40px;
font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.menu a {
color: #475569;
text-decoration: none;
}
.menu > a {
margin-right: 16px;
font-weight: 600;
}
.menu a:hover {
color: #2563eb;
}
.list li:first-child {
color: #b45309;
font-weight: 700;
}

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>组合选择器与伪类</title>
<link rel="stylesheet" href="./answer.css" />
</head>
<body>
<nav class="menu">
<a href="#">首页</a>
<a href="#">课程</a>
<a href="#">练习</a>
</nav>
<section class="list">
<p>学习建议</p>
<ul>
<li>先学结构</li>
<li>再学布局</li>
<li>最后学交互</li>
</ul>
</section>
</body>
</html>

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.menu a {
}
.menu > a {
}
.menu a:hover {
}
.list li:first-child {
}

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02-css-layout/07-selectors-and-pseudo-classes/starter.html Normal file
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>组合选择器与伪类</title>
<link rel="stylesheet" href="./starter.css" />
</head>
<body>
<nav class="menu">
<a href="#">首页</a>
<a href="#">课程</a>
<a href="#">练习</a>
</nav>
<section class="list">
<p>学习建议</p>
<ul>
<li>先学结构</li>
<li>再学布局</li>
<li>最后学交互</li>
</ul>
</section>
</body>
</html>