CSS Animation and Keyframes Guide

CSS animations enable complex motion sequences using keyframes. Here's how to create engaging animations.

Animation Events (JavaScript)#

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Best Practices#

Performance:
✓ Animate transform and opacity
✓ Use will-change sparingly
✓ Avoid layout thrashing
✓ Use GPU acceleration

Timing:
✓ Keep durations short (200-500ms)
✓ Use appropriate easing
✓ Stagger multiple elements
✓ Add subtle delays

Accessibility:
✓ Respect prefers-reduced-motion
✓ Don't rely solely on animation
✓ Provide pause controls
✓ Avoid rapid flashing

Avoid:
✗ Animating layout properties
✗ Too many simultaneous animations
✗ Infinite animations without purpose
✗ Motion sickness triggers

CSS animations with keyframes enable rich motion design without JavaScript. Use transform and opacity for best performance, respect user preferences with prefers-reduced-motion, and keep durations short for better UX. Combine multiple animations with delays for sophisticated sequences, and always provide meaningful motion that enhances rather than distracts.

CSS Animation and Keyframes Guide

Basic Keyframes#

Animation Properties#

Timing Functions#

Fill Modes#

Direction Options#

Practical Animations#

Loading Spinners#

Attention Seekers#

Entrance Animations#

Exit Animations#

Multiple Animations#

Animation Events (JavaScript)#

Performance Optimization#

Reduced Motion#

Best Practices#

Conclusion#

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