Bootstrap 5 Registration Form with Animated Background
A sign-up card floating over a softly animated gradient background, with live password strength, confirmation matching and terms consent.
<section class="wdw-stage">
<div class="container" style="max-width:980px">
<div class="wdw-card overflow-hidden">
<div class="row g-0">
<div class="col-lg-5 wdw-aurora rg-aurora p-4 p-lg-5 d-flex flex-column justify-content-between gap-4">
<div>
<span class="wdw-eyebrow text-white opacity-75">Free for 14 days</span>
<h2 class="wdw-heading text-white h2 mt-2 mb-3">Build faster with a workspace your whole team loves.</h2>
<p class="opacity-75 mb-0">Start a free trial in under a minute. No card needed, cancel any time.</p>
</div>
<div class="d-flex align-items-center gap-3">
<div class="d-flex"><img src="https://i.pravatar.cc/80?img=12" width="32" height="32" alt="" class="rounded-circle border border-2 border-white rg-av"><img src="https://i.pravatar.cc/80?img=32" width="32" height="32" alt="" class="rounded-circle border border-2 border-white rg-av"><img src="https://i.pravatar.cc/80?img=47" width="32" height="32" alt="" class="rounded-circle border border-2 border-white rg-av"><img src="https://i.pravatar.cc/80?img=5" width="32" height="32" alt="" class="rounded-circle border border-2 border-white rg-av"></div>
<p class="small mb-0 opacity-75">Joined by 12,000+ teams this year</p>
</div>
</div>
<div class="col-lg-7 p-4 p-lg-5">
<h3 class="wdw-heading h3 mb-1">Create your account</h3>
<p class="wdw-muted mb-4">Free for 14 days. No card needed.</p>
<form id="regForm" novalidate>
<div class="row g-3 mb-3">
<div class="col-sm-6 form-floating">
<input type="text" class="form-control" id="rgFirst" placeholder="First name" autocomplete="given-name" required>
<label for="rgFirst" class="ms-2">First name</label>
</div>
<div class="col-sm-6 form-floating">
<input type="text" class="form-control" id="rgLast" placeholder="Last name" autocomplete="family-name" required>
<label for="rgLast" class="ms-2">Last name</label>
</div>
</div>
<div class="form-floating mb-3">
<input type="email" class="form-control" id="rgEmail" placeholder="Email" autocomplete="email" aria-describedby="rgEmailErr" required>
<label for="rgEmail">Email address</label>
<div class="invalid-feedback" id="rgEmailErr">Enter a valid email address.</div>
</div>
<div class="row g-3 mb-2">
<div class="col-sm-6 form-floating">
<input type="password" class="form-control" id="rgPass" placeholder="Password" autocomplete="new-password" minlength="8" aria-describedby="rgHint" required>
<label for="rgPass" class="ms-2">Password</label>
</div>
<div class="col-sm-6 form-floating">
<input type="password" class="form-control" id="rgConfirm" placeholder="Confirm" autocomplete="new-password" aria-describedby="rgConfErr" required>
<label for="rgConfirm" class="ms-2">Confirm password</label>
<div class="invalid-feedback" id="rgConfErr">Passwords do not match.</div>
</div>
</div>
<div class="progress mb-1" style="height:6px" role="progressbar" aria-label="Password strength" aria-valuemin="0" aria-valuemax="4" aria-valuenow="0" id="rgMeter"><div class="progress-bar" id="rgBar" style="width:0"></div></div>
<p class="small wdw-muted mb-3" id="rgHint">Use 8+ characters, mixing cases, digits and symbols.</p>
<div class="form-check mb-3">
<input class="form-check-input" type="checkbox" id="rgTerms" required>
<label class="form-check-label small" for="rgTerms">I agree to the <a href="#" class="link-primary fw-semibold text-decoration-none">Terms</a> and <a href="#" class="link-primary fw-semibold text-decoration-none">Privacy Policy</a></label>
</div>
<button type="submit" class="btn btn-primary rounded-pill w-100">Create account</button>
<div class="alert alert-success rounded-4 mt-3 mb-0 d-none" id="rgOk" role="status">Account created. Welcome aboard!</div>
</form>
<p class="text-center small wdw-muted mt-3 mb-0">Already registered? <a href="#" class="link-primary fw-semibold text-decoration-none">Sign in</a></p>
</div>
</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 */
.rg-aurora{background-size:140% 140%,140% 140%,auto;animation:rgDrift 16s ease-in-out infinite alternate}
@keyframes rgDrift{from{background-position:100% 0,0 100%,0 0}to{background-position:70% 30%,30% 70%,0 0}}
.rg-av{margin-left:-.5rem}
.rg-av:first-child{margin-left:0}
@media (prefers-reduced-motion:reduce){.rg-aurora{animation:none}}
#regForm .form-floating>.form-control{height:calc(3.5rem + 2px)}
(function initRegistration() {
var form = document.getElementById('regForm');
if (!form) return;
var pass = document.getElementById('rgPass'), conf = document.getElementById('rgConfirm');
var bar = document.getElementById('rgBar'), meter = document.getElementById('rgMeter'), hint = document.getElementById('rgHint');
var labels = ['Too short', 'Weak', 'Fair', 'Good', 'Strong'], cls = ['bg-danger', 'bg-danger', 'bg-warning', 'bg-success', 'bg-success'];
function score(v) {
var s = 0;
if (v.length >= 8) s++;
if (/[a-z]/.test(v) && /[A-Z]/.test(v)) s++;
if (/\d/.test(v)) s++;
if (/[^A-Za-z0-9]/.test(v)) s++;
return v ? s : 0;
}
pass.addEventListener('input', function () {
var s = score(pass.value);
bar.style.width = (pass.value ? Math.max(s, 1) * 25 : 0) + '%';
bar.className = 'progress-bar ' + cls[s];
meter.setAttribute('aria-valuenow', s);
hint.textContent = pass.value ? 'Strength: ' + labels[s] : 'Use 8+ characters, mixing cases, digits and symbols.';
meter.setAttribute('aria-valuetext', labels[s]);
});
form.addEventListener('submit', function (e) {
e.preventDefault();
var match = pass.value === conf.value;
conf.setCustomValidity(match ? '' : 'mismatch');
form.querySelectorAll('input[required]').forEach(function (f) { f.classList.toggle('is-invalid', !f.checkValidity()); });
var ok = form.checkValidity();
document.getElementById('rgOk').classList.toggle('d-none', !ok);
});
})();
Built on Bootstrap 5.3.8 with plain JavaScript — no jQuery. Supports light and dark mode via data-bs-theme.