Bootstrap 5 Thumbnail Grid with Hover Effects
A responsive three-column thumbnail grid where each photo zooms and reveals its title and caption on hover or focus.
<section class="wdw-stage">
<div class="container" style="max-width: 1040px">
<div class="text-center mb-4 mb-lg-5">
<span class="wdw-eyebrow">Portfolio</span>
<h2 class="wdw-heading display-6 mt-1 mb-2">Selected work</h2>
<p class="wdw-muted mb-0">Hover or focus a thumbnail to see the details.</p>
</div>
<div class="row g-3 g-lg-4">
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=800&h=600&q=70" alt="Mountain light" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Landscape</span>
<span class="th-info">
<span class="th-title">Mountain light</span>
<span class="th-desc">Dawn over the valley</span>
</span>
</a>
</div>
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1469474968028-56623f02e42e?auto=format&fit=crop&w=800&h=600&q=70" alt="Misty ridge" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Landscape</span>
<span class="th-info">
<span class="th-title">Misty ridge</span>
<span class="th-desc">Fog rolling through pines</span>
</span>
</a>
</div>
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=800&h=600&q=70" alt="Forest path" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Nature</span>
<span class="th-info">
<span class="th-title">Forest path</span>
<span class="th-desc">A quiet trail in summer</span>
</span>
</a>
</div>
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=800&h=600&q=70" alt="Lakeside" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Travel</span>
<span class="th-info">
<span class="th-title">Lakeside</span>
<span class="th-desc">Still water at golden hour</span>
</span>
</a>
</div>
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1470071459604-3b5ec3a7fe05?auto=format&fit=crop&w=800&h=600&q=70" alt="Green hills" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Landscape</span>
<span class="th-info">
<span class="th-title">Green hills</span>
<span class="th-desc">Layers of morning haze</span>
</span>
</a>
</div>
<div class="col-12 col-sm-6 col-lg-4">
<a href="#" class="th-card d-block position-relative overflow-hidden rounded-4 text-decoration-none">
<img src="https://images.unsplash.com/photo-1472214103451-9374bd1c798e?auto=format&fit=crop&w=800&h=600&q=70" alt="Open fields" width="800" height="600" loading="lazy">
<span class="th-badge badge rounded-pill">Nature</span>
<span class="th-info">
<span class="th-title">Open fields</span>
<span class="th-desc">Wide skies, long shadows</span>
</span>
</a>
</div>
</div>
</div>
</section>
/* Web Designer Wall library style — shared base for every Bootstrap 5 snippet.
Indigo accent, Plus Jakarta Sans, soft cards, pill buttons. Works in light and dark. */
@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");
:root,
[data-bs-theme="light"] {
--wdw-font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
--bs-body-font-family: var(--wdw-font);
--bs-primary: #4f46e5;
--bs-primary-rgb: 79, 70, 229;
--bs-primary-text-emphasis: #3730a3;
--bs-primary-bg-subtle: #eef2ff;
--bs-primary-border-subtle: #c7d2fe;
--bs-link-color: #4f46e5;
--bs-link-color-rgb: 79, 70, 229;
--bs-link-hover-color: #4338ca;
--bs-link-hover-color-rgb: 67, 56, 202;
--bs-focus-ring-color: rgba(79, 70, 229, 0.25);
--bs-border-radius: 0.75rem;
--bs-border-radius-lg: 1rem;
--bs-border-radius-xl: 1.25rem;
--wdw-radius-card: 1.25rem;
--wdw-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 16px 40px -16px rgba(16, 24, 40, 0.22);
--wdw-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px -4px rgba(16, 24, 40, 0.12);
--wdw-stage: #f5f6fb;
}
[data-bs-theme="dark"] {
--bs-primary: #818cf8;
--bs-primary-rgb: 129, 140, 248;
--bs-primary-text-emphasis: #c7d2fe;
--bs-primary-bg-subtle: rgba(129, 140, 248, 0.14);
--bs-primary-border-subtle: rgba(129, 140, 248, 0.35);
--bs-link-color: #a5b4fc;
--bs-link-color-rgb: 165, 180, 252;
--bs-link-hover-color: #c7d2fe;
--bs-link-hover-color-rgb: 199, 210, 254;
--bs-focus-ring-color: rgba(129, 140, 248, 0.35);
--wdw-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px -16px rgba(0, 0, 0, 0.7);
--wdw-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px -4px rgba(0, 0, 0, 0.5);
--wdw-stage: #0f1117;
}
body { font-family: var(--wdw-font); -webkit-font-smoothing: antialiased; }
/* Bootstrap compiles its blue into these components; point them at the accent. */
.btn-primary {
--bs-btn-bg: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
--bs-btn-hover-bg: #4338ca; --bs-btn-hover-border-color: #4338ca;
--bs-btn-active-bg: #3730a3; --bs-btn-active-border-color: #3730a3;
--bs-btn-disabled-bg: var(--bs-primary); --bs-btn-disabled-border-color: var(--bs-primary);
--bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
[data-bs-theme="dark"] .btn-primary { --bs-btn-color: #0f1117; --bs-btn-hover-bg: #a5b4fc; --bs-btn-hover-border-color: #a5b4fc; --bs-btn-hover-color: #0f1117; --bs-btn-active-color: #0f1117; }
.btn-outline-primary {
--bs-btn-color: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
--bs-btn-hover-bg: var(--bs-primary); --bs-btn-hover-border-color: var(--bs-primary);
--bs-btn-active-bg: var(--bs-primary); --bs-btn-active-border-color: var(--bs-primary);
--bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
.btn { --bs-btn-font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; }
.btn-sm { min-height: 36px; }
.form-control, .form-select { min-height: 44px; border-radius: .75rem; }
.form-control:focus, .form-select:focus, .form-check-input:focus { border-color: rgba(var(--bs-primary-rgb), .6); box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.form-check-input:checked { background-color: var(--bs-primary); border-color: var(--bs-primary); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--bs-primary); }
.nav { --bs-nav-link-color: var(--bs-secondary-color); --bs-nav-link-hover-color: var(--bs-emphasis-color); }
.pagination { --bs-pagination-active-bg: var(--bs-primary); --bs-pagination-active-border-color: var(--bs-primary); --bs-pagination-color: var(--bs-body-color); --bs-pagination-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.progress, .progress-stacked { --bs-progress-bar-bg: var(--bs-primary); }
.list-group { --bs-list-group-active-bg: var(--bs-primary); --bs-list-group-active-border-color: var(--bs-primary); }
.dropdown-menu { --bs-dropdown-link-active-bg: var(--bs-primary); border-radius: .875rem; box-shadow: var(--wdw-shadow-sm); }
.accordion { --bs-accordion-active-bg: var(--bs-primary-bg-subtle); --bs-accordion-active-color: var(--bs-primary-text-emphasis); --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.badge { font-weight: 600; }
/* Library building blocks — use these instead of re-inventing them per snippet. */
.wdw-stage { min-height: 100vh; display: flex; align-items: center; background: var(--wdw-stage); padding-block: 3rem; }
.wdw-card { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: var(--wdw-radius-card); box-shadow: var(--wdw-shadow); }
.wdw-card-sm { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: 1rem; box-shadow: var(--wdw-shadow-sm); }
.wdw-aurora { position: relative; color: #fff; background: radial-gradient(60% 55% at 100% 0, #818cf8 0, transparent 70%), radial-gradient(65% 60% at 0 100%, #ec4899 0, transparent 65%), #1e1b4b; }
.wdw-eyebrow { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bs-primary); }
.wdw-heading { font-weight: 800; letter-spacing: -.02em; color: var(--bs-emphasis-color); }
.wdw-muted { color: var(--bs-secondary-color); }
.wdw-icon { width: 2.75rem; height: 2.75rem; flex: none; display: inline-flex; align-items: center; justify-content: center; border-radius: .875rem; background: var(--bs-primary-bg-subtle); color: var(--bs-primary); }
/* Component */
.th-card { aspect-ratio: 4 / 3; background: var(--bs-tertiary-bg); box-shadow: var(--wdw-shadow-sm); }
.th-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2,.7,.2,1); }
.th-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,17,40,.85), rgba(15,17,40,.1) 60%); opacity: 0; transition: opacity .35s; }
.th-badge { position: absolute; top: .875rem; left: .875rem; z-index: 2; background: rgba(255,255,255,.92); color: #1e1b4b; }
.th-info { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; padding: 1.25rem; color: #fff; transform: translateY(1rem); opacity: 0; transition: transform .35s, opacity .35s; }
.th-title { display: block; font-weight: 700; font-size: 1.15rem; }
.th-desc { display: block; font-size: .875rem; color: rgba(255,255,255,.8); }
.th-card:hover img, .th-card:focus-visible img { transform: scale(1.08); }
.th-card:hover::after, .th-card:focus-visible::after { opacity: 1; }
.th-card:hover .th-info, .th-card:focus-visible .th-info { transform: none; opacity: 1; }
.th-card:focus-visible { outline: 3px solid var(--bs-primary); outline-offset: 3px; }
@media (hover: none) { .th-card::after { opacity: 1; } .th-info { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .th-card img, .th-info, .th-card::after { transition: none; } }
Built on Bootstrap 5.3.8 with plain JavaScript — no jQuery. Supports light and dark mode via data-bs-theme.