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chali 4495ae0e28 feat: Add CSS layout exercises and corresponding HTML files
- 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.
2026-03-09 14:16:22 +08:00

38 lines
524 B
CSS

body {
margin: 0;
background-color: #f5f7fb;
color: #1f2937;
font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.card {
width: 720px;
margin: 48px auto;
padding: 24px;
background-color: #ffffff;
border: 1px solid #dbe3ee;
border-radius: 16px;
}
h1 {
color: #1d4ed8;
font-size: 32px;
}
.intro {
font-size: 16px;
line-height: 1.8;
}
.note {
background-color: #e0f2fe;
color: #0f172a;
padding: 12px;
border-radius: 10px;
}
.important {
color: #b45309;
font-weight: 700;
}