Mega Menu Design
When to Use
- 20+ navigation items that can't fit in a simple nav bar
- E-commerce with many categories
- Enterprise apps with many feature areas
Design
- Full-width or large dropdown panel
- Organized in columns by category
- Category headers as section labels
- Max 3-4 columns
- Featured content or promotions on the right (optional)
- Close on click outside or Escape
Interaction
- Desktop: hover to open (with 200ms delay to prevent accidental triggers)
- Mobile: convert to accordion or drill-down navigation
- Diagonal tolerance: allow mouse to move diagonally toward submenu
Rules
- Keep items scannable (short labels, clear hierarchy)
- Don't put everything in the mega menu
- Highlight current section
- Keyboard navigable (arrow keys, Enter, Escape)
- Test with screen readers