Position sticky combines relative and fixed positioning. Here's how to use it effectively.
Basic Sticky#
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How Sticky Works#
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Common Pitfalls#
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Sticky Header Patterns#
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Sticky Sidebar#
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Sticky Table Headers#
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Sticky Section Headers#
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Sticky with Intersection Observer#
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Responsive Sticky#
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Sticky Footer#
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Debugging Sticky#
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Best Practices#
Setup:
✓ Always set a threshold (top/bottom)
✓ Ensure parent has height
✓ Check parent overflow values
✓ Use align-self in flex/grid
Styling:
✓ Add background to prevent transparency
✓ Use z-index for stacking
✓ Add shadow when stuck
✓ Consider backdrop-filter
Performance:
✓ Avoid complex shadows while scrolling
✓ Use will-change sparingly
✓ Keep sticky content simple
✓ Test on mobile devices
Responsive:
✓ Adjust top value for header heights
✓ Consider disabling on mobile
✓ Test in all viewport sizes
✓ Account for dynamic content
Conclusion#
Position sticky is powerful but requires proper setup. Ensure parents have height and visible overflow, always set a threshold value, and use align-self in flex/grid layouts. Debug with outlines and DevTools when sticky doesn't work as expected.