Modern CSS Transitions
Polished hover and focus transitions for buttons, cards and links that work on any .btn or .card.
1Neon Fill Button
An outline button that fills with colour from the left and glows; works on any .btn or link. Class: fx-neon-fill-button
<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 fx-neon-fill-button">Get started</button>
<a href="#" class="btn fx-neon-fill-button rounded-pill">Learn more <i class="bi bi-arrow-right" aria-hidden="true"></i></a>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-neon-fill-button, .btn.fx-neon-fill-button {
position: relative; isolation: isolate; overflow: hidden; z-index: 0;
color: var(--wt-primary); background: transparent; border: 2px solid var(--wt-primary);
transition: color .35s ease, box-shadow .35s ease;
}
.fx-neon-fill-button::before {
content: ""; position: absolute; inset: 0; z-index: -1; background: var(--wt-primary);
transform: scaleX(0); transform-origin: left center; transition: transform .4s cubic-bezier(.7, 0, .3, 1);
}
.fx-neon-fill-button:hover, .fx-neon-fill-button:focus-visible, .btn.fx-neon-fill-button:hover, .btn.fx-neon-fill-button:focus-visible {
color: var(--wt-on-primary, #fff); border-color: var(--wt-primary);
box-shadow: 0 0 12px rgba(var(--wt-primary-rgb), .6), 0 0 32px rgba(var(--wt-primary-rgb), .35);
}
.fx-neon-fill-button:hover::before, .fx-neon-fill-button:focus-visible::before { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
.fx-neon-fill-button, .fx-neon-fill-button::before, .fx-neon-fill-button::after, .fx-neon-fill-button *, .fx-neon-fill-button *::before, .fx-neon-fill-button *::after { animation: none !important; transition: none !important; }
}2Morphing Gradient
A gradient button that softly changes to a second gradient and morphs into a pill on hover. Class: fx-morphing-gradient
<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 fx-morphing-gradient">Upgrade now</button>
<button type="button" class="btn fx-morphing-gradient"><i class="bi bi-download" aria-hidden="true"></i> Download</button>
</div>
/* CSS (already in assets/css/effects.css) */
.fx-morphing-gradient, .btn.fx-morphing-gradient {
position: relative; isolation: isolate; overflow: hidden; z-index: 0; border: 0;
color: var(--wt-on-primary, #fff); border-radius: .6rem;
background: linear-gradient(135deg, var(--wt-primary), var(--wt-secondary));
transition: border-radius .5s ease, transform .5s ease, box-shadow .5s;
}
.fx-morphing-gradient::before {
content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0;
background: linear-gradient(135deg, var(--wt-accent), var(--wt-primary));
transition: opacity .5s ease;
}
.fx-morphing-gradient:hover, .fx-morphing-gradient:focus-visible, .btn.fx-morphing-gradient:hover, .btn.fx-morphing-gradient:focus-visible {
color: var(--wt-on-primary, #fff); border-radius: 2rem; transform: translateY(-2px);
box-shadow: 0 12px 24px -10px rgba(var(--wt-accent-rgb), .7);
}
.fx-morphing-gradient:hover::before, .fx-morphing-gradient:focus-visible::before { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
.fx-morphing-gradient, .fx-morphing-gradient::before, .fx-morphing-gradient::after, .fx-morphing-gradient *, .fx-morphing-gradient *::before, .fx-morphing-gradient *::after { animation: none !important; transition: none !important; }
}33D 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 Aria Fischer" class="w-100 h-100 object-fit-cover">
</div>
<div class="fx-3d-flip-card-back text-center">
<div class="fw-bold">
Aria Fischer
</div>
<div class="small opacity-75 mb-2">
Product Designer
</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; }
}