Modern CSS Gradient Effects

<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-animated-rainbow rounded-4 p-4 text-center w-100" style="max-width:18rem;text-shadow:0 1px 3px rgba(0,0,0,.3)">
    <h3 class="h5 fw-bold mb-1">Find the home that fits your life</h3>
    <p class="small mb-0">Every colour, always moving.</p>
  </div>
  <button type="button" class="btn rounded-pill border-0 fx-animated-rainbow">Celebrate</button>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-animated-rainbow {
  color: #fff;
  background: linear-gradient(90deg, #ff3d7f, #ff9f1c, #ffd23f, #3bce73, #2ec4ff, #7b5cff, #ff3d7f);
  background-size: 300% 100%;
  animation: fx-animated-rainbow-flow 8s linear infinite;
}
@keyframes fx-animated-rainbow-flow { to { background-position: -150% 0; } }
@media (prefers-reduced-motion: reduce) {
  .fx-animated-rainbow, .fx-animated-rainbow::before, .fx-animated-rainbow::after, .fx-animated-rainbow *, .fx-animated-rainbow *::before, .fx-animated-rainbow *::after { animation: none !important; transition: none !important; }
}

<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 fx-animated-border" style="width:13rem">
    <div class="card-body text-center">
      <div class="fs-2 text-primary">
        <i class="bi bi-trophy-fill" aria-hidden="true"></i>
      </div>
      <h3 class="h6 mb-1">Pro plan</h3>
      <p class="small text-body-secondary mb-0">$21.39 / month</p>
    </div>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
@property --fx-animated-border-angle { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
.fx-animated-border {
  border: 3px solid transparent;
  background:
    linear-gradient(var(--wt-surface, #fff), var(--wt-surface, #fff)) padding-box,
    conic-gradient(from var(--fx-animated-border-angle), var(--wt-primary), var(--wt-accent), var(--wt-secondary), var(--wt-primary)) border-box;
  animation: fx-animated-border-turn 4s linear infinite;
}
@keyframes fx-animated-border-turn { to { --fx-animated-border-angle: 360deg; } }
@media (prefers-reduced-motion: reduce) {
  .fx-animated-border, .fx-animated-border::before, .fx-animated-border::after, .fx-animated-border *, .fx-animated-border *::before, .fx-animated-border *::after { animation: none !important; transition: none !important; }
}

<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-conic-rotation">
    <img src="../assets/img/avatar-8.svg" alt="Profile with a spinning ring" class="object-fit-cover" style="width:96px;height:96px">
  </div>
  <div class="fx-conic-rotation">
    <div class="bg-body d-grid fw-bold fs-4" style="width:96px;height:96px;place-items:center">
      76
    </div>
  </div>
</div>

/* CSS (already in assets/css/effects.css) */
.fx-conic-rotation { position: relative; isolation: isolate; overflow: hidden; border-radius: 50%; padding: 5px; }
.fx-conic-rotation::before {
  content: ""; position: absolute; inset: -30%; z-index: -1;
  background: conic-gradient(var(--wt-primary), var(--wt-accent), var(--wt-secondary), var(--wt-primary));
  animation: fx-conic-rotation-spin 3s linear infinite;
}
.fx-conic-rotation > * { display: block; border-radius: 50%; }
@keyframes fx-conic-rotation-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .fx-conic-rotation, .fx-conic-rotation::before, .fx-conic-rotation::after, .fx-conic-rotation *, .fx-conic-rotation *::before, .fx-conic-rotation *::after { animation: none !important; transition: none !important; }
}