Modern CSS Animations

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

1Pulse Wave Effect

Sends expanding rings out of a button, avatar or status dot to draw the eye. Class: fx-pulse-wave-effect

Ava Duarte

Live now

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <button type="button" class="btn btn-primary rounded-circle d-inline-flex align-items-center justify-content-center fs-4 fx-pulse-wave-effect" style="width:4rem;height:4rem" aria-label="Start live session"><i class="bi bi-broadcast" aria-hidden="true"></i></button>
  <div class="d-flex align-items-center gap-2">
    <img src="../assets/img/avatar-2.svg" alt="Portrait of the host" class="rounded-circle fx-pulse-wave-effect" width="48" height="48"> 
    <div>
      <div class="fw-semibold small">
        Ava Duarte
      </div>
      <span class="badge text-bg-success">Live now</span>
    </div>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-pulse-wave-effect { animation: fx-pulse-wave-effect-pulse 2s ease-out infinite; }
@keyframes fx-pulse-wave-effect-pulse {
  0% { box-shadow: 0 0 0 0 rgba(var(--wt-primary-rgb), .55), 0 0 0 0 rgba(var(--wt-primary-rgb), .35); }
  70% { box-shadow: 0 0 0 16px rgba(var(--wt-primary-rgb), 0), 0 0 0 32px rgba(var(--wt-primary-rgb), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--wt-primary-rgb), 0), 0 0 0 0 rgba(var(--wt-primary-rgb), 0); }
}
@media (prefers-reduced-motion: reduce) {
  .fx-pulse-wave-effect, .fx-pulse-wave-effect::before, .fx-pulse-wave-effect::after, .fx-pulse-wave-effect *, .fx-pulse-wave-effect *::before, .fx-pulse-wave-effect *::after { animation: none !important; transition: none !important; }
}

2Multi-Layer Spinner

A loading indicator made of three counter-rotating rings in the theme colours. Class: fx-multi-layer-spinner

Preparing your journey

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <div class="text-center">
    <div class="fx-multi-layer-spinner" role="status">
      <span class="visually-hidden">Loading...</span>
    </div>
    <p class="small text-body-secondary mt-3 mb-0">Preparing your journey</p>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-multi-layer-spinner {
  position: relative; display: inline-block; width: 4rem; height: 4rem; border-radius: 50%;
  border: 4px solid transparent; border-top-color: var(--wt-primary);
  animation: fx-multi-layer-spinner-spin 1.1s linear infinite;
}
.fx-multi-layer-spinner::before, .fx-multi-layer-spinner::after { content: ""; position: absolute; border-radius: 50%; border: 4px solid transparent; }
.fx-multi-layer-spinner::before { inset: 4px; border-top-color: var(--wt-secondary); animation: fx-multi-layer-spinner-spin 1.7s linear infinite reverse; }
.fx-multi-layer-spinner::after { inset: 14px; border-top-color: var(--wt-accent); animation: fx-multi-layer-spinner-spin .8s linear infinite; }
@keyframes fx-multi-layer-spinner-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .fx-multi-layer-spinner, .fx-multi-layer-spinner::before, .fx-multi-layer-spinner::after, .fx-multi-layer-spinner *, .fx-multi-layer-spinner *::before, .fx-multi-layer-spinner *::after { animation: none !important; transition: none !important; }
}

3Bouncing Text

Makes each letter of a short word hop in turn; wrap every letter in a span with --i set to its index. Class: fx-bouncing-text

<div class="d-flex flex-wrap align-items-center justify-content-center gap-3 p-3 h-100" style="min-height:200px">
  <h2 class="display-5 fw-bold mb-0 fx-bouncing-text" aria-label="Yay!"><span style="--i:0" aria-hidden="true">Y</span><span style="--i:1" aria-hidden="true">a</span><span style="--i:2" aria-hidden="true">y</span><span style="--i:3" aria-hidden="true">!</span></h2>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-bouncing-text { display: inline-flex; }
.fx-bouncing-text > span {
  display: inline-block;
  animation: fx-bouncing-text-bounce 1.6s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * .09s);
}
@keyframes fx-bouncing-text-bounce {
  0%, 60%, 100% { transform: translateY(0); }
  25% { transform: translateY(-14px); color: var(--wt-primary-ink); }
  40% { transform: translateY(2px); }
}
@media (prefers-reduced-motion: reduce) {
  .fx-bouncing-text, .fx-bouncing-text::before, .fx-bouncing-text::after, .fx-bouncing-text *, .fx-bouncing-text *::before, .fx-bouncing-text *::after { animation: none !important; transition: none !important; }
}