First Move (11~18) - Code, Learn, Build
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First Move (11~18) - Code, Learn, Build

Structured, level-based technology learning paths from foundational exploration to industry mastery.

Learning Domains

  • Python Programming (Active)
  • Computer Science Core
  • Web Development
  • AI & Machine Learning

Platform Architecture

  • Level-Based Progression
  • Decoupled Content Schema
  • Modular Code Execution Engine
  • Curated Official Resources

© 2026 First Move (11~18) • CODE • LEARN • BUILD. Built with Next.js App Router.

Readability & Accessibility First

← HTML5 & Modern CSS Layout Systems|Level 2: CSS Box Model, Flexbox & Grid Systems

4. 2D CSS Grid Layouts & Mobile-First Media Queries

Lesson 4 of 6
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2D CSS Grid Layouts & Mobile-First Media Queries

Architect complex multi-column layouts using grid-template-columns (repeat, fr, minmax), grid-gap, and responsive CSS media queries.

2D Layouts with CSS Grid

### CSS Grid vs Flexbox - **Flexbox**: 1-Dimensional layout system (either rows OR columns). - **CSS Grid**: 2-Dimensional layout system controlling rows AND columns simultaneously.
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Solve the hands-on coding exercise in the interactive code editor.