CSS @keyframes rules define the intermediate steps in an animation sequence. They specify what styles the element will have at certain points during the animation. You define a set of keyframes with percentage values (0%, 50%, 100%, etc.), and the browser interpolates the styles between those points smoothly. This allows you to create complex, multi-step animations without JavaScript.

Simply copy the @keyframes definition for any animation, paste it into your CSS file, then apply it to an element using the animation shorthand property. For example:

@keyframes lib-bounce { ... }
.my-element { animation: lib-bounce 0.6s ease; }

You can customize the duration, timing function, delay, and iteration count as needed.

Yes! CSS @keyframes and the animation property are supported in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For Safari versions older than 9, you may need the -webkit- prefix. All major mobile browsers also support CSS animations. The animations in this library use standard CSS properties like transform and opacity which have excellent cross-browser support.

Absolutely! You can combine multiple animations by separating them with commas in the animation property. For example: animation: lib-fadeIn 1s ease, lib-pulse 2s 1s infinite;. This would first fade the element in, then start a pulsing effect after a 1-second delay. Just be mindful that some combinations (especially those affecting the same CSS properties like transform) may conflict.

Use the animation-duration property to control speed (e.g., 0.3s for fast, 2s for slow). The animation-timing-function controls the acceleration curve — common values include ease, ease-in, ease-out, ease-in-out, and linear. You can also use cubic-bezier() for custom timing curves. Additionally, animation-delay sets a wait time before the animation starts, and animation-iteration-count controls how many times it repeats (infinite for endless looping).

When used correctly, CSS animations are highly performant. Animations that only use transform and opacity are GPU-accelerated and don't trigger layout recalculations, making them very smooth. Avoid animating properties like width, height, top, left, or margin as these can cause layout thrashing. Most animations in this library use only transform and opacity for optimal performance. Also consider using will-change sparingly for elements you know will animate.

Yes! For hover-triggered animations, simply apply the animation inside a :hover pseudo-class: .my-element:hover { animation: lib-bounce 0.6s; }. For scroll-triggered animations, you can use the Intersection Observer API in JavaScript to add an animation class when the element enters the viewport. Alternatively, modern CSS features like animation-timeline: scroll() (experimental) allow scroll-driven animations natively.

transition smoothly interpolates between two states when a CSS property changes (usually triggered by hover or class change). It's great for simple A-to-B effects. animation with @keyframes allows multi-step sequences with precise control over intermediate states. Use transitions for simple interactive effects (button hover), and animations for complex, self-contained sequences (attention-grabbing effects, loaders, entrance animations) that may loop or have multiple phases.