CSS Animation Patterns Overview CSS animations and transitions provide hardware-accelerated motion for web interfaces using keyframes, transitions, transforms, and modern scroll-driven and view transition APIs. Animate only composite properties ( , , ) for smooth 60fps performance, and always respect . The browser rendering pipeline has four stages: Style, Layout, Paint, and Composite. Animating composite-only properties skips Layout and Paint entirely, running on the GPU compositor thread. This is the single most important performance principle for CSS animation. Modern CSS adds two powerful…