Modern CSS Transitions
Polished hover and focus transitions for buttons, cards and links that work on any .btn or .card.
13D Flip Card
Flips a card over in 3D on hover or focus to show its back; use the -inner, -front and -back child classes. Class: fx-3d-flip-card
<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-3d-flip-card" style="width:13rem;height:11rem" tabindex="0">
<div class="fx-3d-flip-card-inner">
<div class="fx-3d-flip-card-front shadow">
<img src="../assets/img/photo-9.svg" alt="Portrait of Leo Larsen" class="w-100 h-100 object-fit-cover">
</div>
<div class="fx-3d-flip-card-back text-center">
<div class="fw-bold">
Leo Larsen
</div>
<div class="small opacity-75 mb-2">
Support Specialist
</div>
<a href="#" class="btn btn-light btn-sm">View profile</a>
</div>
</div>
</div>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-3d-flip-card { perspective: 1000px; }
.fx-3d-flip-card .fx-3d-flip-card-inner {
position: relative; width: 100%; height: 100%; transform-style: preserve-3d;
transition: transform .7s cubic-bezier(.4, .2, .2, 1);
}
.fx-3d-flip-card:hover .fx-3d-flip-card-inner, .fx-3d-flip-card:focus-within .fx-3d-flip-card-inner { transform: rotateY(180deg); }
.fx-3d-flip-card .fx-3d-flip-card-front, .fx-3d-flip-card .fx-3d-flip-card-back {
position: absolute; inset: 0; -webkit-backface-visibility: hidden; backface-visibility: hidden;
border-radius: var(--wt-radius-lg, 1rem); overflow: hidden;
}
.fx-3d-flip-card .fx-3d-flip-card-back {
transform: rotateY(180deg); display: flex; flex-direction: column; justify-content: center; padding: 1rem;
color: var(--wt-on-primary, #fff); background: linear-gradient(135deg, var(--wt-primary), var(--wt-secondary));
}
@media (prefers-reduced-motion: reduce) {
.fx-3d-flip-card, .fx-3d-flip-card::before, .fx-3d-flip-card::after, .fx-3d-flip-card *, .fx-3d-flip-card *::before, .fx-3d-flip-card *::after { animation: none !important; transition: none !important; }
}2Liquid Ripple
A button that fills with a swirling liquid from the bottom on hover. Class: fx-liquid-ripple
<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-lg px-4 fx-liquid-ripple">Order now</button>
<button type="button" class="btn rounded-pill fx-liquid-ripple">Hover me</button>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-liquid-ripple, .btn.fx-liquid-ripple {
position: relative; isolation: isolate; overflow: hidden; z-index: 0;
color: var(--wt-primary); background: var(--wt-surface, #fff); border: 2px solid var(--wt-primary);
transition: color .5s ease;
}
.fx-liquid-ripple::before {
content: ""; position: absolute; z-index: -1; left: 50%; top: 100%; width: 240%; aspect-ratio: 1;
margin-left: -120%; margin-top: 12%; border-radius: 42%;
background: var(--wt-primary);
transition: top .8s ease, margin-top .8s ease;
animation: fx-liquid-ripple-swirl 5s linear infinite;
}
.fx-liquid-ripple:hover, .fx-liquid-ripple:focus-visible, .btn.fx-liquid-ripple:hover, .btn.fx-liquid-ripple:focus-visible { color: var(--wt-on-primary, #fff); border-color: var(--wt-primary); }
.fx-liquid-ripple:hover::before, .fx-liquid-ripple:focus-visible::before { top: 50%; margin-top: -120%; }
.fx-liquid-ripple:active { transform: scale(.97); }
@keyframes fx-liquid-ripple-swirl { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
.fx-liquid-ripple, .fx-liquid-ripple::before, .fx-liquid-ripple::after, .fx-liquid-ripple *, .fx-liquid-ripple *::before, .fx-liquid-ripple *::after { animation: none !important; transition: none !important; }
}3Elastic Scale
Buttons, chips and cards that grow with a rubbery overshoot on hover and squash when pressed. Class: fx-elastic-scale
<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 fx-elastic-scale">Continue</button>
<span class="badge rounded-pill text-bg-secondary fs-6 fx-elastic-scale">product</span> <a href="#" class="btn btn-outline-primary rounded-circle fs-5 fx-elastic-scale" aria-label="Cart, $84.81"><i class="bi bi-cart3" aria-hidden="true"></i></a>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-elastic-scale { transition: transform .5s cubic-bezier(.34, 1.56, .64, 1); }
.fx-elastic-scale:hover, .fx-elastic-scale:focus-visible { transform: scale(1.08); }
.fx-elastic-scale:active { transform: scale(.94); transition-duration: .15s; }
@media (prefers-reduced-motion: reduce) {
.fx-elastic-scale, .fx-elastic-scale::before, .fx-elastic-scale::after, .fx-elastic-scale *, .fx-elastic-scale *::before, .fx-elastic-scale *::after { animation: none !important; transition: none !important; }
}