Modern CSS Animations

Keyframe animations for cards, icons, loaders and headings - drop a class on an element and it comes alive.

1Particle Float

Fills a card or panel with small glowing particles that rise behind its content. Class: fx-particle-float

Study smarter with guided paths

Particles drift up behind the content.

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <div class="fx-particle-float rounded-4 border p-4 text-center w-100" style="max-width:18rem">
    <div class="fs-2 text-primary">
      <i class="bi bi-stars" aria-hidden="true"></i>
    </div>
    <h3 class="h5 mb-1">Study smarter with guided paths</h3>
    <p class="small text-body-secondary mb-0">Particles drift up behind the content.</p>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-particle-float { position: relative; isolation: isolate; overflow: hidden; }
.fx-particle-float::before, .fx-particle-float::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(circle at 12% 30%, rgba(var(--wt-primary-rgb), .7) 0 2px, transparent 3px),
    radial-gradient(circle at 38% 80%, rgba(var(--wt-accent-rgb), .7) 0 3px, transparent 4px),
    radial-gradient(circle at 62% 45%, rgba(var(--wt-secondary-rgb), .6) 0 2px, transparent 3px),
    radial-gradient(circle at 86% 15%, rgba(var(--wt-primary-rgb), .6) 0 3px, transparent 4px);
  background-size: 160px 160px;
  animation: fx-particle-float-rise 10s linear infinite;
}
.fx-particle-float::after { background-size: 230px 230px; opacity: .6; animation: fx-particle-float-rise-slow 16s linear infinite; }
@keyframes fx-particle-float-rise { to { background-position: 0 -160px; } }
@keyframes fx-particle-float-rise-slow { to { background-position: 0 -230px; } }
@media (prefers-reduced-motion: reduce) {
  .fx-particle-float, .fx-particle-float::before, .fx-particle-float::after, .fx-particle-float *, .fx-particle-float *::before, .fx-particle-float *::after { animation: none !important; transition: none !important; }
}

2Orbital Motion

Two small planets circle around an avatar, logo or icon on separate orbits. Class: fx-orbital-motion

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <div class="fx-orbital-motion">
    <img src="../assets/img/avatar-5.svg" alt="Team member avatar" class="rounded-circle shadow" style="width:4.5rem;height:4.5rem">
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-orbital-motion {
  position: relative; display: inline-grid; place-items: center; width: 9rem; height: 9rem;
  border-radius: 50%; border: 1px dashed rgba(var(--wt-primary-rgb), .45);
}
.fx-orbital-motion::before, .fx-orbital-motion::after {
  content: ""; position: absolute; top: 50%; left: 50%; border-radius: 50%; pointer-events: none;
}
.fx-orbital-motion::before {
  width: 14px; height: 14px; margin: -7px; background: var(--wt-primary);
  box-shadow: 0 0 10px rgba(var(--wt-primary-rgb), .7);
  animation: fx-orbital-motion-outer 5s linear infinite;
}
.fx-orbital-motion::after {
  width: 10px; height: 10px; margin: -5px; background: var(--wt-accent);
  animation: fx-orbital-motion-inner 3.2s linear infinite reverse;
}
@keyframes fx-orbital-motion-outer { from { transform: rotate(0deg) translateX(4.5rem) rotate(0deg); } to { transform: rotate(360deg) translateX(4.5rem) rotate(-360deg); } }
@keyframes fx-orbital-motion-inner { from { transform: rotate(0deg) translateX(3.1rem); } to { transform: rotate(360deg) translateX(3.1rem); } }
@media (prefers-reduced-motion: reduce) {
  .fx-orbital-motion, .fx-orbital-motion::before, .fx-orbital-motion::after, .fx-orbital-motion *, .fx-orbital-motion *::before, .fx-orbital-motion *::after { animation: none !important; transition: none !important; }
}

3Shimmer Skeleton

Loading placeholders with a light sweep; add the class to every grey block of a skeleton card. Class: fx-shimmer-skeleton

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <div class="card w-100" style="max-width:18rem" aria-busy="true" aria-label="Loading content">
    <div class="card-body">
      <div class="d-flex align-items-center gap-3 mb-3">
        <span class="fx-shimmer-skeleton rounded-circle flex-shrink-0" style="width:48px;height:48px"></span> 
        <div class="flex-grow-1">
          <span class="fx-shimmer-skeleton mb-2" style="width:70%"></span><span class="fx-shimmer-skeleton" style="width:45%"></span>
        </div>
      </div>
      <span class="fx-shimmer-skeleton mb-2" style="height:70px"></span> <span class="fx-shimmer-skeleton mb-2"></span> <span class="fx-shimmer-skeleton" style="width:60%"></span> 
    </div>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-shimmer-skeleton {
  display: block; min-height: .9rem; border-radius: var(--wt-radius, .5rem);
  background: linear-gradient(90deg, rgba(var(--wt-primary-rgb), .08) 25%, rgba(var(--wt-primary-rgb), .22) 37%, rgba(var(--wt-primary-rgb), .08) 63%);
  background-size: 400% 100%;
  animation: fx-shimmer-skeleton-shine 1.4s ease infinite;
}
@keyframes fx-shimmer-skeleton-shine { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
@media (prefers-reduced-motion: reduce) {
  .fx-shimmer-skeleton, .fx-shimmer-skeleton::before, .fx-shimmer-skeleton::after, .fx-shimmer-skeleton *, .fx-shimmer-skeleton *::before, .fx-shimmer-skeleton *::after { animation: none !important; transition: none !important; }
}