CSSAnimation Patterns & Examples

Animation Patterns & Examples

CSS animations power modern interactive web experiences. Proven patterns include loading spinners, bouncing elements, smooth page transitions, staggered list reveals, and attention-grabbing effects. This page covers real-world patterns, performance optimization, and how to combine animations with transitions for polished interactions.

Common animation patterns

CSS
/* 1. LOADING SPINNER */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* 2. PULSING DOT (breathing effect) */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pulse {
  width: 12px;
  height: 12px;
  background: #3498db;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

/* 3. BOUNCING BALL */
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

.bouncing-ball {
  width: 20px;
  height: 20px;
  background: #e74c3c;
  border-radius: 50%;
  animation: bounce 0.8s ease infinite;
}

/* 4. FADE IN */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fade-in 1s ease forwards;
}

/* 5. SLIDE IN FROM LEFT */
@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-50px); }
  to { opacity: 1; transform: translateX(0); }
}

.slide-in-left {
  animation: slide-in-left 0.6s ease forwards;
}

/* 6. SCALE UP */
@keyframes scale-up {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.scale-up {
  animation: scale-up 0.4s ease forwards;
}
Staggered animations

CSS
/* List items cascade in with staggered delays */
@keyframes list-entrance {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.list-item {
  animation: list-entrance 0.5s ease forwards;
}

.list-item:nth-child(1) { animation-delay: 0s; }
.list-item:nth-child(2) { animation-delay: 0.1s; }
.list-item:nth-child(3) { animation-delay: 0.2s; }
.list-item:nth-child(4) { animation-delay: 0.3s; }
.list-item:nth-child(5) { animation-delay: 0.4s; }

/* Grid stagger (diagonal wave) */
.grid-item {
  animation: scale-up 0.4s ease forwards;
  animation-delay: calc((var(--row) + var(--col)) * 0.1s);
  /* Requires CSS custom properties from JavaScript */
}

/* Wave effect: each item delays based on position */
.wave-item {
  animation: float-up 0.6s ease infinite;
}

@keyframes float-up {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.wave-item:nth-child(1) { animation-delay: 0s; }
.wave-item:nth-child(2) { animation-delay: 0.1s; }
.wave-item:nth-child(3) { animation-delay: 0.2s; }
.wave-item:nth-child(4) { animation-delay: 0.3s; }
.wave-item:nth-child(5) { animation-delay: 0.4s; }
Multi-property animations

CSS
/* Card entrance with multiple properties */
@keyframes card-entrance {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.card {
  animation: card-entrance 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Complex animation with key points */
@keyframes complex-motion {
  0% {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
  }
  40% {
    opacity: 1;
    transform: translateY(-5px) scale(1.02);
  }
  70% {
    transform: translateY(2px) scale(0.99);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.element {
  animation: complex-motion 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

/* Attention-grabbing shake */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.attention {
  animation: shake 0.4s ease;
}

/* Highlight effect */
@keyframes highlight {
  0% { background-color: #fff9e6; }
  100% { background-color: transparent; }
}

.new-item {
  animation: highlight 1s ease forwards;
}
Interactive animations

CSS
/* Button hover animation */
.button {
  background: #3498db;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.button:hover {
  background: #2980b9;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

/* Button with ripple effect */
@keyframes ripple {
  to {
    opacity: 0;
    transform: scale(4);
  }
}

.ripple-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 1;
}

.ripple-button:active::after {
  animation: ripple 0.6s ease-out;
}

/* Menu slide animation */
@keyframes menu-slide {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.menu.open {
  animation: menu-slide 0.3s ease forwards;
}

/* Dropdown expand animation */
@keyframes dropdown-expand {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    max-height: 500px;
    transform: translateY(0);
  }
}

.dropdown.open {
  animation: dropdown-expand 0.3s ease forwards;
}
Loading and progress patterns

CSS
/* Animated dots loader */
@keyframes dot-pulse {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

.loading-dots span {
  animation: dot-pulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

/* Progress bar animation */
@keyframes progress {
  0% { width: 0%; }
  50% { width: 80%; }
  100% { width: 100%; }
}

.progress-bar {
  height: 4px;
  background: #3498db;
  animation: progress 2s ease forwards;
}

/* Infinite progress (indeterminate) */
@keyframes indeterminate {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.progress-indeterminate::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 30%;
  background: linear-gradient(90deg, transparent, #3498db, transparent);
  animation: indeterminate 1.5s ease-in-out infinite;
}

/* Skeleton loading animation */
@keyframes skeleton-loading {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.skeleton {
  height: 20px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: skeleton-loading 2s infinite;
}
Notification and toast animations

CSS
/* Toast slide-up entrance */
@keyframes toast-enter {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.toast {
  animation: toast-enter 0.3s ease forwards;
  animation-fill-mode: forwards;
}

/* Toast slide-down exit */
@keyframes toast-exit {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

.toast.removing {
  animation: toast-exit 0.3s ease forwards;
}

/* Notification bell shake */
@keyframes bell-shake {
  0%, 100% { transform: rotate(0deg); }
  10%, 30% { transform: rotate(-10deg); }
  20%, 40%, 60%, 80% { transform: rotate(10deg); }
  50% { transform: rotate(-10deg); }
  70% { transform: rotate(10deg); }
  90% { transform: rotate(-10deg); }
}

.notification-bell.alert {
  animation: bell-shake 0.5s ease;
}

/* Badge pop animation */
@keyframes badge-pop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  70% {
    transform: scale(1.2);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.badge.new {
  animation: badge-pop 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
Performance optimization

CSS
/* Use transform for smooth 60fps animations */
.smooth {
  animation: move 1s ease;
}

@keyframes move {
  from { transform: translateX(0); }
  to { transform: translateX(100px); }
}

/* Avoid animating layout properties */
.avoid {
  animation: bad-move 1s ease;
}

@keyframes bad-move {
  from { left: 0; }
  to { left: 100px; }
}

/* Use will-change for complex animations */
.optimized {
  will-change: transform, opacity;
  animation: complex-anim 2s ease infinite;
}

/* Keep animations simple */
.simple-anim {
  animation: fade 1s ease;
}

@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Limit simultaneous animations */
.limited {
  animation:
    fade 0.5s ease forwards,
    scale 0.5s ease forwards;
  /* 2 animations max */
}

/* Pause animations off-screen */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
  }
}
Combining animations and transitions

CSS
/* Animation for entrance, transition for interaction */

.element {
  /* Entrance animation */
  animation: fade-in 0.5s ease forwards;

  /* Interaction transition */
  transition: background 0.3s ease, transform 0.2s ease;
}

.element:hover {
  background: #f0f0f0;
  transform: scale(1.05);
}

/* Entrance animation with delayed transition */
@keyframes card-entrance {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.card {
  animation: card-entrance 0.5s ease forwards;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  transform: scale(1.02);
}

/* Multiple entrance animations with stagger */
.list-item {
  animation: list-enter 0.6s ease forwards;
  transition: all 0.3s ease;
}

.list-item:nth-child(1) { animation-delay: 0s; }
.list-item:nth-child(2) { animation-delay: 0.1s; }
.list-item:nth-child(3) { animation-delay: 0.2s; }

.list-item:hover {
  background: #f5f5f5;
  padding-left: 10px;
}

@keyframes list-enter {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}
Note
Proven animation patterns: spinners (spin 1s linear infinite), pulsing dots (pulse 2s ease-in-out infinite with staggered delays), bouncing (bounce 0.8s ease infinite alternate), fade-in (0.5s ease forwards), staggered lists (0.1s delay increments). Key principles: use transform for performance, keep under 1s for feedback, limit to 2-3 concurrent animations, respect prefers-reduced-motion. Combine animations (entrance) with transitions (interaction) for polished UX.
Next
Scroll-driven animations: [Scroll-Driven Animations](/css/scroll-driven-animations).