Animating Web Experiences
summary
CSS3 transitions, keyframe animations and 2D/3D transforms let developers animate UI patterns declaratively and with far less CPU work than JS. Examples: animating focus with box-shadow and easings, collapsing accordions using the max-height trick because height auto is not animatable, a CSS-only carousel (5 slides, 21s total) built by staggering identical keyframes with delays, and transforms (translate/scale/rotate + perspective) that reduce repaints ~3000→40; caveats include animatable-property limits and WebKit prefixing for older Safari/Android.
AI-written summary · about
chapters (19)
- 0:00The history of animation
- 1:10Early web animation
- 2:03CSS and DOM interaction
- 4:21Introduction to transitions
- 6:16Animating layout changes
- 8:48Handling auto values
- 11:20Advanced transition timing
- 13:42Principles of animation
- 18:09Browser support and limits
- 21:21CSS animations and keyframes
- 24:52Controlling animation behavior
- 29:06Performance strategies
- 31:45Building a CSS carousel
- 36:18Animation performance costs
- 38:15Using CSS transforms
- 43:09Transform origin and scale
- 46:453D transforms and perspective
- 49:21Perspective and camera angles
- 52:34The future of web animation
