CSS Flexbox Complete Guide

CSS Flexbox is a one-dimensional layout system for arranging items in rows or columns. Here's a complete guide.

Align Content (Multiple Lines)#

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Best Practices#

Container:
✓ Use gap for spacing
✓ Set flex-wrap for responsive
✓ Use min-height not height
✓ Consider overflow

Items:
✓ Use flex shorthand
✓ Set flex-shrink: 0 for fixed
✓ Use margin-top: auto for push
✓ Avoid fixed widths

Responsive:
✓ Mobile-first approach
✓ Use flex-basis with calc
✓ Change direction at breakpoints
✓ Test at various widths

Avoid:
✗ Nesting too deeply
✗ Using for 2D layouts (use Grid)
✗ Forgetting flex-shrink
✗ Fixed heights that overflow

Flexbox excels at one-dimensional layouts - rows or columns. Use justify-content for main axis alignment, align-items for cross axis, and gap for spacing. The flex shorthand controls how items grow and shrink. Combine with CSS Grid for complete layout control. For two-dimensional layouts, Grid is often more appropriate.

CSS Flexbox Complete Guide

Basic Flexbox#

Flex Direction#

Flex Wrap#

Justify Content (Main Axis)#

Align Items (Cross Axis)#

Align Content (Multiple Lines)#

Gap#

Flex Item Properties#

Align Self#

Order#

Centering#

Navigation Bar#

Card Layout#

Holy Grail Layout#

Equal Height Columns#

Responsive Flexbox#

Sticky Footer#

Media Object#

Form Layout#

Mastering Margin Auto#

Best Practices#

Conclusion#

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