Container queries enable responsive components based on container size, not viewport. Here's how to use them.
Basic Container Queries
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Container Types
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Responsive Card Component
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Grid Layout with Container Queries
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Sidebar and Main Content
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Component Library Patterns
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Dashboard Widgets
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Table Responsiveness
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Container Query Units
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Nested Containers
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Feature Detection
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JavaScript Integration
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Best Practices
Design:
✓ Use inline-size for most cases
✓ Name containers for clarity
✓ Design components in isolation
✓ Start mobile-first
Performance:
✓ Limit containment scope
✓ Avoid deep nesting
✓ Use container-type, not size
✓ Test with ResizeObserver
Patterns:
✓ Responsive cards and widgets
✓ Adaptive grids
✓ Fluid typography with cqi
✓ Component-based responsive design
Avoid:
✗ Over-using size containment
✗ Too many nested containers
✗ Forgetting fallbacks
✗ Querying unknown containers
Conclusion
Container queries enable truly responsive components that adapt to their container, not the viewport. Use them for reusable components, dashboard widgets, and any element that appears in different contexts. Combine with container query units for fluid sizing and provide fallbacks for older browsers.