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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
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# 练习 2：盒模型卡片
## 目标
彻底理解 `margin`、`padding`、`border` 的区别。
## 你要练什么
- `width`
- `padding`
- `border`
- `margin`
- `border-radius`
- `box-shadow`
## 任务
请把一个课程卡片做出来，要求：
- 卡片和页面边缘有距离
- 卡片内部文字和边框有距离
- 卡片有边框和圆角
- 卡片有轻微阴影
- 按钮区域和正文之间有明显间隔
## 文件
- [starter.html](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/02-box-model-card/starter.html)
- [starter.css](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/02-box-model-card/starter.css)
- [answer.html](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/02-box-model-card/answer.html)
- [answer.css](/Volumes/Macintosh HD 1/home/front-end-example/02-css-layout/02-box-model-card/answer.css)

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body {
margin: 0;
background: #eef2ff;
font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.course-card {
width: 360px;
margin: 56px auto;
padding: 28px;
border: 1px solid #c7d2fe;
border-radius: 20px;
background: #ffffff;
box-shadow: 0 16px 40px rgba(37, 99, 235, 0.12);
}
.tag {
display: inline-block;
margin: 0;
padding: 6px 12px;
border-radius: 999px;
background: #dbeafe;
color: #1d4ed8;
}
.actions {
margin-top: 24px;
}
a {
display: inline-block;
padding: 10px 18px;
border-radius: 10px;
background: #1d4ed8;
color: #ffffff;
text-decoration: none;
}

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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>盒模型卡片</title>
<link rel="stylesheet" href="./answer.css" />
</head>
<body>
<article class="course-card">
<p class="tag">HTML 基础</p>
<h1>前端入门训练营</h1>
<p>从 HTML 结构开始，逐步学习 CSS 布局和 JavaScript 基础。</p>
<div class="actions">
<a href="#">立即报名</a>
</div>
</article>
</body>
</html>

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body {
}
.course-card {
}
.tag {
}
.actions {
}
a {
}

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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>盒模型卡片</title>
<link rel="stylesheet" href="./starter.css" />
</head>
<body>
<article class="course-card">
<p class="tag">HTML 基础</p>
<h1>前端入门训练营</h1>
<p>从 HTML 结构开始，逐步学习 CSS 布局和 JavaScript 基础。</p>
<div class="actions">
<a href="#">立即报名</a>
</div>
</article>
</body>
</html>