Bootstrap 5 Responsive Navbar with Version Dropdown

<div class="wdw-page">
  <header class="wdw-header sticky-top">
    <nav class="navbar navbar-expand-lg py-3" aria-label="Main">
      <div class="container">
        <a class="navbar-brand d-flex align-items-center gap-2 fw-bold wdw-heading" href="#">
          <span class="wdw-logo" aria-hidden="true">B</span> Bootkit
        </a>
        <button class="navbar-toggler border-0 shadow-none" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav" aria-controls="mainNav" aria-expanded="false" aria-label="Toggle navigation">
          <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="mainNav">
          <ul class="navbar-nav me-auto gap-lg-1 mt-3 mt-lg-0">
            <li class="nav-item"><a class="nav-link active" aria-current="page" href="#">Home</a></li>
            <li class="nav-item"><a class="nav-link" href="#">Documentation</a></li>
            <li class="nav-item"><a class="nav-link" href="#">Examples</a></li>
            <li class="nav-item"><a class="nav-link" href="#">Themes</a></li>
            <li class="nav-item"><a class="nav-link" href="#">Blog</a></li>
          </ul>
          <div class="d-flex flex-column flex-lg-row align-items-lg-center gap-2 gap-lg-3 mt-3 mt-lg-0">
            <div class="dropdown">
              <button class="btn btn-sm btn-outline-secondary rounded-pill px-3 dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">v5.3</button>
              <ul class="dropdown-menu dropdown-menu-lg-end">
                <li><a class="dropdown-item active" href="#">Latest (5.3.x)</a></li>
                <li><a class="dropdown-item" href="#">v5.2</a></li>
                <li><a class="dropdown-item" href="#">v5.1</a></li>
                <li><hr class="dropdown-divider"></li>
                <li><a class="dropdown-item" href="#">All versions</a></li>
              </ul>
            </div>
            <div class="d-flex gap-1">
              <a class="wdw-social" href="#" aria-label="GitHub"><svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor"><path d="M12 .5a11.5 11.5 0 0 0-3.64 22.4c.58.1.79-.25.79-.56v-2c-3.2.7-3.88-1.37-3.88-1.37-.52-1.33-1.28-1.69-1.28-1.69-1.04-.71.08-.7.08-.7 1.15.08 1.76 1.19 1.76 1.19 1.03 1.76 2.7 1.25 3.36.95.1-.75.4-1.25.73-1.54-2.55-.29-5.24-1.28-5.24-5.7 0-1.26.45-2.29 1.19-3.1-.12-.29-.52-1.46.11-3.05 0 0 .97-.31 3.18 1.18a11 11 0 0 1 5.78 0c2.2-1.49 3.17-1.18 3.17-1.18.63 1.59.23 2.76.11 3.05.74.81 1.19 1.84 1.19 3.1 0 4.43-2.7 5.4-5.27 5.69.41.36.78 1.06.78 2.14v3.17c0 .31.21.67.8.56A11.5 11.5 0 0 0 12 .5z"/></svg></a>
              <a class="wdw-social" href="#" aria-label="X"><svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M18.2 2.5h3.3l-7.2 8.3 8.5 11.2h-6.7l-5.2-6.8-6 6.8H1.6l7.7-8.8L1.2 2.5H8l4.7 6.2zm-1.2 17.5h1.8L7 4.4H5z"/></svg></a>
              <a class="wdw-social" href="#" aria-label="Dribbble"><svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round"><circle cx="12" cy="12" r="9.5"/><path d="M5 5.5c4 2 9 3 14.500 2M8 21c1-5 4-9 8.500-12M9 3c3 4 5 9 5.500 17"/></svg></a>
            </div>
            <a class="btn btn-primary rounded-pill px-4" href="#">Download</a>
          </div>
        </div>
      </div>
    </nav>
  </header>
  <main class="wdw-hero wdw-aurora">
    <div class="container text-center py-5">
      <span class="badge rounded-pill text-bg-light bg-opacity-25 mb-3 px-3 py-2">v5.3 is here</span>
      <h1 class="display-4 fw-bold mb-3" style="letter-spacing:-.03em">Build fast, responsive sites</h1>
      <p class="lead opacity-75 mx-auto mb-4" style="max-width: 36rem">A clean header with navigation, a version picker, social links and a call to action that collapses neatly on mobile.</p>
      <a class="btn btn-light rounded-pill px-4" href="#">Get started</a>
    </div>
  </main>
</div>

/* 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 */
.wdw-page { min-height: 100vh; display: flex; flex-direction: column; background: var(--wdw-stage); }
.wdw-header { background: color-mix(in srgb, var(--bs-body-bg) 85%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--bs-border-color-translucent); box-shadow: 0 1px 2px rgba(16,24,40,.04); }
.wdw-logo { width: 2rem; height: 2rem; display: inline-grid; place-items: center; border-radius: .6rem; background: var(--bs-primary); color: #fff; font-weight: 800; }
[data-bs-theme="dark"] .wdw-logo { color: #0f1117; }
.wdw-header .nav-link { font-weight: 500; border-radius: 99px; padding: .5rem .9rem; }
.wdw-header .nav-link:hover { background: var(--bs-tertiary-bg); }
.wdw-header .nav-link.active { color: var(--bs-primary); background: var(--bs-primary-bg-subtle); font-weight: 600; }
.wdw-social { width: 2.75rem; height: 2.75rem; display: inline-grid; place-items: center; border-radius: 50%; color: var(--bs-secondary-color); text-decoration: none; transition: background .15s, color .15s; }
.wdw-social:hover { background: var(--bs-tertiary-bg); color: var(--bs-emphasis-color); }
.wdw-hero { flex: 1; display: flex; align-items: center; }
.wdw-hero .badge { color: #fff !important; background: rgba(255,255,255,.16) !important; }