A Comprehensive Guide to Pure CSS Keyframes Easing

Why Easing Matters for Efficacy

Linear animations feel mechanical. Easing functions (like ease-out or cubic-bezier) add weight and momentum, making cards slide and pulse naturally.

# Easing Profiles

• **ease-out**: Starts fast, slows down. Excellent for slide-in menu cards.
• **ease-in**: Starts slow, speeds up. Great for elements exiting the screen.
• **cubic-bezier(x1, y1, x2, y2)**: Enables custom spring-back recoil movements.

.element {
  animation: float 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

Accessibility & Reduced Motion

Always respect OS preferences. Users with vestibular conditions can suffer nausea from heavy transitions. Wrap animations inside media queries:

@media (prefers-reduced-motion: reduce) {
  * {
    animation-delay: 0s !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
}