Bootstrap 5 Header Newsletter Bar (Show/Hide)
A newsletter sign-up bar that slides open above a full-bleed editorial hero, with inline validation and a skip action that collapses it away. A small button brings it back.
<section class="wdw-stage">
<div class="container" style="max-width:960px">
<div class="wdw-card overflow-hidden" id="nl-demo">
<div class="collapse show" id="nlPanel">
<div class="nl-bar p-4 p-md-4">
<form class="row g-3 align-items-center" id="nlForm" novalidate>
<div class="col-lg-5 d-flex align-items-center gap-3">
<span class="wdw-icon" aria-hidden="true">
<svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.9" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="5" width="18" height="14" rx="3"/><path d="m4 8 8 5.5L20 8"/></svg>
</span>
<div>
<h2 class="h6 fw-bold mb-0">Get the weekly dispatch</h2>
<p class="small wdw-muted mb-0">One thoughtful story, every Friday.</p>
</div>
</div>
<div class="col-lg-7">
<div class="input-group">
<label class="visually-hidden" for="nlEmail">Email address</label>
<input type="email" class="form-control rounded-start-pill ps-4" id="nlEmail" placeholder="[email protected]" required autocomplete="email">
<button class="btn btn-primary rounded-end-pill px-4" type="submit">Subscribe</button>
<button class="btn btn-link link-secondary ms-1 px-2" type="button" id="nlSkip" aria-label="Skip newsletter">Skip</button>
</div>
<div class="small mt-2 d-none" id="nlMsg" role="status"></div>
</div>
</form>
</div>
</div>
<div class="nl-hero d-flex align-items-end text-white">
<div class="p-4 p-md-5 position-relative">
<button class="btn btn-light btn-sm rounded-pill mb-4 d-none" type="button" id="nlOpen" aria-controls="nlPanel" aria-expanded="false">Show newsletter</button>
<span class="wdw-eyebrow text-white-50 d-block mb-2">Essay</span>
<h1 class="display-5 fw-bolder mb-3" style="letter-spacing:-.03em">Going outside is highly overrated.</h1>
<p class="mb-0 col-lg-8 opacity-75">"I created the OASIS because I never felt at home in the real world. I didn't know how to connect with the people there. I was afraid, for all of my life."</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 */
.nl-bar { background: var(--bs-body-bg); }
.nl-hero { min-height: 340px; background: linear-gradient(180deg, rgba(10,10,30,.1), rgba(10,10,30,.82)), url("https://images.unsplash.com/photo-1519335553051-96f1218cd5fa?auto=format&fit=crop&w=1400&q=70") center/cover; }
#nlMsg.ok { color: var(--bs-success-text-emphasis); }
#nlMsg.err { color: var(--bs-danger-text-emphasis); }
@media (max-width: 575.98px) { .nl-hero { min-height: 380px; } #nlForm .input-group { flex-wrap: wrap; gap: .5rem; } #nlForm .input-group > * { border-radius: 999px !important; width: 100%; flex: 1 1 100%; } }
(function () {
function initNewsletterBar() {
var panelEl = document.getElementById('nlPanel');
var form = document.getElementById('nlForm');
if (!panelEl || !form) return;
var panel = bootstrap.Collapse.getOrCreateInstance(panelEl, { toggle: false });
var openBtn = document.getElementById('nlOpen');
var msg = document.getElementById('nlMsg');
var email = document.getElementById('nlEmail');
panelEl.addEventListener('hidden.bs.collapse', function () { openBtn.classList.remove('d-none'); openBtn.setAttribute('aria-expanded', 'false'); });
panelEl.addEventListener('show.bs.collapse', function () { openBtn.classList.add('d-none'); });
document.getElementById('nlSkip').addEventListener('click', function () { panel.hide(); });
openBtn.addEventListener('click', function () { panel.show(); });
form.addEventListener('submit', function (e) {
e.preventDefault();
msg.classList.remove('d-none', 'ok', 'err');
if (!email.checkValidity()) { msg.classList.add('err'); msg.textContent = 'Please enter a valid email address.'; email.focus(); return; }
msg.classList.add('ok'); msg.textContent = 'You are in. Check your inbox to confirm.';
setTimeout(function () { panel.hide(); }, 1600);
});
}
initNewsletterBar();
})();
Built on Bootstrap 5.3.8 with plain JavaScript — no jQuery. Supports light and dark mode via data-bs-theme.
