CHAPTER · 5 lessons

Modern CSS

Five lessons on the CSS features every 2024+ codebase uses — custom properties, fluid sizing, :has() parent selectors, container queries, and the new layout primitives (aspect-ratio, logical properties, cascade layers).

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1. CSS Custom Properties (Variables)

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2. Fluid Sizing — clamp(), min(), max()

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3. The :has() Parent Selector

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4. Container Queries

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5. Layout Primitives — aspect-ratio, logical properties, @layer

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