Flexbox is a one-dimensional layout method for arranging items in rows or columns. Here's how to master it.
Flex Container#
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Main Axis Alignment#
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Cross Axis Alignment#
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Multi-line Alignment#
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Flex Items#
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Individual Item Alignment#
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Item Order#
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Gap#
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Common Patterns#
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Responsive Patterns#
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Sticky Footer#
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Input Group#
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Media Object#
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Debugging Flexbox#
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Best Practices#
Container:
✓ Use flex-wrap for responsive
✓ Set gap for spacing
✓ Use justify-content/align-items
✓ Consider flex-direction for stacking
Items:
✓ Use flex shorthand
✓ Set min-width: 0 to allow shrinking
✓ Use flex-basis for initial size
✓ Use order sparingly
Layout:
✓ Combine with CSS Grid
✓ Use for component layouts
✓ Test at different sizes
✓ Consider accessibility (order)
Avoid:
✗ Flexbox for grid layouts (use Grid)
✗ Deep flex nesting
✗ Forgetting min-width: 0
✗ Changing order without reason
Conclusion#
Flexbox excels at one-dimensional layouts - distributing space and aligning items in rows or columns. Use justify-content for main axis alignment, align-items for cross axis, and flex-grow/shrink/basis for item sizing. The gap property simplifies spacing. Combine with CSS Grid for complex layouts: Grid for overall page structure, Flexbox for component-level alignment.