Tailwind CSS Scroll Navigation Blocks

Scroll Navigation

Tailwind CSS scroll navigation blocks for one-page layouts, docs, and sticky in-page navigation patterns.

A sticky header uses in-page links and a dropdown group to track sections in one long page.

Create a responsive UI block named "Header Scrollspy Nav with Dropdown" that visually and behaviorally matches the Preline source block. Use the destination project's existing framework, Tailwind setup, semantic tokens, component primitives, icon system, routing/link conventions, and dark-mode strategy.

Implementation preflight:
- Exact public block reference: https://preline.co/blocks/navigation-layout/scroll-navigation/#header-scrollspy-nav-with-dropdown. Open this exact anchored block and inspect its Preview and HTML tabs when browsing is available; do not use neighboring examples or surrounding docs chrome as source.
- Before writing code, inspect the destination project's package manifest, Tailwind/theme configuration, global styles, app shell/container conventions, icon system, and existing components. Reuse or compose an existing implementation when it already represents the same source partial or behavior; do not duplicate its markup, state, assets, or interaction logic.
- If neither the public reference nor local source paths are accessible, use only the explicit source-derived details in this prompt. If those details are insufficient, request the source HTML instead of guessing from the block title or category.

Build only this source block. Do not add unrelated page chrome, marketing sections, dashboard widgets, extra cards, extra modals, placeholder states, or footer content unless they are present in the source block.

Source metadata:
- Catalog family: navigation-layout/scroll-navigation
- Block ID: header-scrollspy-nav-with-dropdown
- Source description: A sticky header uses in-page links and a dropdown group to track sections in one long page.
- Preview iframe: https://preline.co/blocks/navigation-layout/scroll-navigation/iframes/free/header-scrollspy-nav-with-dropdown.html (repo path: blocks/navigation-layout/scroll-navigation/iframes/free/header-scrollspy-nav-with-dropdown.html)
- Source markup reference:
  - partials/blocks/sources/pages/header-scrollspy-nav-with-dropdown.html
  - partials/pro/logos/logo.html

Use the source HTML tab and referenced partials as the source of truth. Preserve exact visible copy, content order, hierarchy, component density, spacing relationships, borders, radii, icons, status markers, dropdown/menu rows, form states, responsive order, and interaction content. If the source imports shared partials or assets, reuse those local components/assets when the destination can import them; otherwise recreate their visible structure faithfully from the source.

Block-specific fidelity rules:
- For headers, navbars, sidebars, tabs, and app chrome, separate source demo wrapper width from the destination app shell. Reuse the destination project's header/container max width and padding when adapting.
- Preserve active/current states, trigger geometry, separator presence, mobile ordering, dropdown placement, and focus/keyboard behavior.
- Source content inventory (from the source markup):
  - The header is `sticky top-0 inset-x-0 z-50 bg-navbar border-b border-navbar-line` wrapping a `max-w-340 mx-auto px-4 sm:px-6 lg:px-8 py-2` nav with the Preline logo at start.
  - Four scrollspy links in order - `Landing`, `Account`, `Work`, `Blog` (targets `#landing`, `#account`, `#work`, `#blog`) - followed by a `Dropdown` toggle whose menu holds `First`, `Second`, `Third` (targets `#first`, `#second`, `#three`); each link's leading `size-4` icon is `block md:hidden`, so icons show only in the mobile collapse.
  - `Landing` carries the `active` class on first load; the scrollspy container is `data-hs-scrollspy="#scrollspy"` with `[--scrollspy-offset:220] md:[--scrollspy-offset:70]` and active rows use `hs-scrollspy-active:bg-navbar-nav-active`.
  - The mobile menu is HSCollapse: a `size-9` hamburger button `#hs-header-scrollspy-collapse` with `data-hs-collapse="#hs-header-scrollspy"`, `aria-expanded="false"`, swapping burger/X icons via `hs-collapse-open:hidden` / `hs-collapse-open:block`; the panel is `hidden ... md:block` and scrolls at `max-h-[75vh]`.
  - The dropdown switches strategy by breakpoint - `[--strategy:static] md:[--strategy:fixed] [--adaptive:none] md:[--adaptive:adaptive] [--is-collapse:true] md:[--is-collapse:false]` - rendering as an indented inline list on mobile and a `md:w-52` popover with `md:bg-dropdown md:border md:border-dropdown-line md:rounded-lg md:shadow-md` on desktop.
  - The demo page body is seven scroll targets with only an `h2` each: `Landing section`, `Account section`, `Work section`, `Blog section`, `Dropdown: First section`, `Dropdown: Second section`, `Dropdown: Third section`; heights are `min-h-300`, `min-h-100` x3, then `min-h-260` x3.
  - An inline `window.addEventListener('load', ...)` script pairs `HSCollapse.getInstance('#hs-header-scrollspy-collapse', true)` with `HSScrollspy.getInstance('[data-hs-scrollspy="#scrollspy"]', true)` and hooks `beforeScroll` so the collapse closes (awaiting `HSStaticMethods.afterTransition`) before scrolling when `window.innerWidth <= 639` - keep this behavior.

Token and Tailwind rules:
- Treat source token classes as semantic roles, not fixed class names to blindly copy.
- Map every source `primary` role to the destination project's current primary token/config/CSS variable. Active links, checked states, progress lines, focus rings, primary gradients, logo primary fills/strokes, and primary buttons must share that destination primary color.
- Do not hardcode Preline blue or emit `text-blue-*`, `bg-blue-*`, `border-blue-*`, `fill-blue-*`, `stroke-blue-*`, `from-blue-*`, `via-blue-*`, `to-blue-*`, or fixed blue hex/rgb values for primary roles unless the destination primary is explicitly blue.
- Before using source-only token classes such as `text-foreground-inverse`, `bg-layer`, `border-layer-line`, `bg-navbar`, `border-line-2`, `bg-dropdown`, or similar Preline tokens, inspect the destination Tailwind config, global CSS/theme variables, and existing components for an equivalent utility/token.
- Prefer existing destination utilities such as `text-white`, `text-primary-foreground`, `text-foreground`, `text-muted-foreground`, `bg-background`, `bg-card`, `bg-popover`, `border-border`, `bg-muted`, `bg-accent`, `ring-ring`, or app-specific tokens when they match the source role.
- If no equivalent exists, add the smallest project-appropriate token or utility before using it. Do not leave undefined source classes in the generated markup.

Asset and icon rules:
- Use exact source images, avatars, product media, branded SVGs, payment marks, channel logos, and app icons when the source provides them.
- Do not replace source assets with initials, emojis, generic icons, generated placeholders, or different stock media.
- Ordinary interface icons should match the destination icon system. If the project uses Lucide-style outline icons, keep the 24 viewBox, `fill="none"`, `stroke="currentColor"`, rounded caps/joins, and source stroke widths.
- Brand/source SVG shape is fixed content. Only map semantic colors such as primary fill/stroke to the destination token.

Behavior and accessibility:
- Preserve source interactions: links, buttons, dropdowns, tooltips, tabs, menus, drawers, modals, toggles, search, filters, form controls, validation states, loading/empty states, and open/closed defaults.
- For source behavior powered by Preline JS or a third-party package, inspect installed dependencies and existing primitives first. Reuse a destination primitive only when it can preserve the source geometry, states, accessibility, and behavior.
- Treat new dependencies as allowed by default unless the user, repository instructions, or package policy explicitly prohibit them. When no faithful equivalent exists, install/use the Preline UI runtime/plugin or the exact source third-party package; do not silently substitute ad hoc JavaScript or custom React state.
- Only under an explicit dependency prohibition may you implement a scoped framework-native equivalent. It must preserve keyboard and focus management, placement and layering, responsive behavior, and accessibility; static or simplified approximations are not acceptable.
- Use semantic HTML and accessible names. Keep `aria-current`, `aria-expanded`, `aria-haspopup`, `role`, labels, focus states, and keyboard behavior when the source exposes them or the destination primitive requires them.
- Desktop and mobile states must not overlap text, clip controls, or shift layout unexpectedly. Controls with icons, counters, badges, and labels should keep stable dimensions across hover/focus/active states.

Final QA:
- Compare the result against the source preview and HTML tab.
- Verify primary color follows the destination project, not Preline's default blue.
- Verify all emitted classes exist in the destination or are added deliberately.
- Verify responsive layout, focus states, dropdown/popover layering, long-text truncation, and source asset paths.
- Keep the final implementation scoped to this block and avoid unrelated refactors.

<header class="sticky top-0 inset-x-0 bg-navbar border-b border-navbar-line flex flex-wrap md:justify-start md:flex-nowrap z-50 w-full">
  <nav class="relative max-w-340 w-full mx-auto md:flex md:items-center md:justify-between md:gap-3 px-4 sm:px-6 lg:px-8 py-2">
    
    <div class="flex items-center justify-between">
      
      <a class="flex-none rounded-md text-xl inline-block font-semibold focus:outline-hidden focus:opacity-80" href="#" aria-label="Preline">
        <svg class="w-28 h-auto" width="116" height="32" viewBox="0 0 116 32" fill="none" xmlns="http://www.w3.org/2000/svg">
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12.0568C62.1437 11.4413 63.3563 11.1335 64.7474 11.1335C65.683 11.1335 66.5539 11.2843 67.3603 11.5859C68.1728 11.8814 68.8806 12.3277 69.4839 12.9247C70.0932 13.5218 70.5672 14.2727 70.9057 15.1776C71.2443 16.0762 71.4135 17.1288 71.4135 18.3352V19.4155H59.4384V16.978H67.7111C67.7111 16.4117 67.588 15.91 67.3418 15.473C67.0956 15.036 66.754 14.6944 66.317 14.4482C65.8861 14.1958 65.3844 14.0696 64.812 14.0696C64.2149 14.0696 63.6856 14.2081 63.2239 14.4851C62.7684 14.7559 62.4114 15.1222 62.1529 15.5838C61.8944 16.0393 61.762 16.5471 61.7559 17.1072V19.4247C61.7559 20.1264 61.8851 20.7327 62.1437 21.2436C62.4083 21.7545 62.7807 22.1484 63.2608 22.4254C63.741 22.7024 64.3103 22.8409 64.9689 22.8409C65.406 22.8409 65.8061 22.7794 66.1692 22.6562C66.5324 22.5331 66.8432 22.3485 67.1018 22.1023C67.3603 21.8561 67.5572 21.5545 67.6927 21.1974L71.3304 21.4375C71.1458 22.3116 70.7672 23.0748 70.1948 23.7273C69.6285 24.3736 68.896 24.8783 67.9974 25.2415C67.1048 25.5985 66.0738 25.777 64.9043 25.777ZM77.1335 6.59091V25.5H73.2003V6.59091H77.1335ZM79.5043 25.5V11.3182H83.4375V25.5H79.5043ZM81.4801 9.49006C80.8954 9.49006 80.3937 9.29616 79.9752 8.90838C79.5628 8.51444 79.3566 8.04356 79.3566 7.49574C79.3566 6.95407 79.5628 6.48935 79.9752 6.10156C80.3937 5.70762 80.8954 5.51065 81.4801 5.51065C82.0649 5.51065 82.5635 5.70762 82.9759 6.10156C83.3944 6.48935 83.6037 6.95407 83.6037 7.49574C83.6037 8.04356 83.3944 8.51444 82.9759 8.90838C82.5635 9.29616 82.0649 9.49006 81.4801 9.49006ZM89.7415 17.3011V25.5H85.8083V11.3182H89.5569V13.8203H89.723C90.037 12.9955 90.5632 12.343 91.3019 11.8629C92.0405 11.3767 92.9361 11.1335 93.9887 11.1335C94.9735 11.1335 95.8322 11.349 96.5647 11.7798C97.2971 12.2107 97.8665 12.8262 98.2728 13.6264C98.679 14.4205 98.8821 15.3684 98.8821 16.4702V25.5H94.9489V17.1719C94.9551 16.304 94.7335 15.6269 94.2841 15.1406C93.8348 14.6482 93.2162 14.402 92.4283 14.402C91.8989 14.402 91.4311 14.5159 91.0249 14.7436C90.6248 14.9714 90.3109 15.3037 90.0831 15.7408C89.8615 16.1716 89.7477 16.6918 89.7415 17.3011ZM107.665 25.777C106.206 25.777 104.951 25.4815 103.898 24.8906C102.852 24.2936 102.045 23.4503 101.479 22.3608C100.913 21.2652 100.63 19.9695 100.63 18.4737C100.63 17.0149 100.913 15.7346 101.479 14.6328C102.045 13.531 102.842 12.6723 103.87 12.0568C104.905 11.4413 106.117 11.1335 107.508 11.1335C108.444 11.1335 109.315 11.2843 110.121 11.5859C110.934 11.8814 111.641 12.3277 112.245 12.9247C112.854 13.5218 113.328 14.2727 113.667 15.1776C114.005 16.0762 114.174 17.1288 114.174 18.3352V19.4155H102.199V16.978H110.472C110.472 16.4117 110.349 15.91 110.103 15.473C109.856 15.036 109.515 14.6944 109.078 14.4482C108.647 14.1958 108.145 14.0696 107.573 14.0696C106.976 14.0696 106.446 14.2081 105.985 14.4851C105.529 14.7559 105.172 15.1222 104.914 15.5838C104.655 16.0393 104.523 16.5471 104.517 17.1072V19.4247C104.517 20.1264 104.646 20.7327 104.905 21.2436C105.169 21.7545 105.542 22.1484 106.022 22.4254C106.502 22.7024 107.071 22.8409 107.73 22.8409C108.167 22.8409 108.567 22.7794 108.93 22.6562C109.293 22.5331 109.604 22.3485 109.863 22.1023C110.121 21.8561 110.318 21.5545 110.454 21.1974L114.091 21.4375C113.907 22.3116 113.528 23.0748 112.956 23.7273C112.389 24.3736 111.657 24.8783 110.758 25.2415C109.866 25.5985 108.835 25.777 107.665 25.777Z" class="fill-primary" fill="currentColor"/>
          <path d="M1 29.5V16.5C1 9.87258 6.37258 4.5 13 4.5C19.6274 4.5 25 9.87258 25 16.5C25 23.1274 19.6274 28.5 13 28.5H12" class="stroke-primary" stroke="currentColor" stroke-width="2"/>
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          <circle cx="13" cy="16.5214" r="5" class="fill-primary" fill="currentColor"/>
        </svg>
      </a>
      
      
      
      <div class="md:hidden">
        <button type="button" class="hs-collapse-toggle relative size-9 flex justify-center items-center text-sm font-semibold rounded-lg bg-layer border border-layer-line text-layer-foreground hover:bg-layer-hover focus:outline-hidden focus:bg-layer-focus disabled:opacity-50 disabled:pointer-events-none" id="hs-header-scrollspy-collapse" aria-expanded="false" aria-controls="hs-header-scrollspy" aria-label="Toggle navigation" data-hs-collapse="#hs-header-scrollspy">
          <svg class="hs-collapse-open:hidden size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="3" x2="21" y1="6" y2="6"/><line x1="3" x2="21" y1="12" y2="12"/><line x1="3" x2="21" y1="18" y2="18"/></svg>
          <svg class="hs-collapse-open:block shrink-0 hidden size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 6 6 18"/><path d="m6 6 12 12"/></svg>
          <span class="sr-only">Toggle navigation</span>
        </button>
      </div>
      
    </div>

<div id="hs-header-scrollspy" class="hs-collapse hidden overflow-hidden transition-all duration-300 basis-full grow md:block" aria-labelledby="hs-header-scrollspy-collapse" role="region">
      <div class="overflow-hidden overflow-y-auto max-h-[75vh] [&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar-thumb]:rounded-none [&::-webkit-scrollbar-track]:bg-scrollbar-track [&::-webkit-scrollbar-thumb]:bg-scrollbar-thumb">
        <div data-hs-scrollspy="#scrollspy" class="py-2 md:py-0 [--scrollspy-offset:220] md:[--scrollspy-offset:70] flex flex-col md:flex-row md:items-center md:justify-end gap-0.5 md:gap-1">
          <a class="p-2 flex items-center text-sm text-navbar-nav-foreground hover:bg-navbar-nav-hover rounded-lg focus:outline-hidden focus:bg-navbar-nav-focus hs-scrollspy-active:bg-navbar-nav-active active" href="#landing">
            <svg class="shrink-0 size-4 me-3 md:me-2 block md:hidden" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 21v-8a1 1 0 0 0-1-1h-4a1 1 0 0 0-1 1v8"/><path d="M3 10a2 2 0 0 1 .709-1.528l7-5.999a2 2 0 0 1 2.582 0l7 5.999A2 2 0 0 1 21 10v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/></svg>
            Landing
          </a>
          
          <a class="p-2 flex items-center text-sm text-navbar-nav-foreground hover:bg-navbar-nav-hover rounded-lg focus:outline-hidden focus:bg-navbar-nav-focus hs-scrollspy-active:bg-navbar-nav-active" href="#account">
            <svg class="shrink-0 size-4 me-3 md:me-2 block md:hidden" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M19 21v-2a4 4 0 0 0-4-4H9a4 4 0 0 0-4 4v2"/><circle cx="12" cy="7" r="4"/></svg>
            Account
          </a>
          
          <a class="p-2 flex items-center text-sm text-navbar-nav-foreground hover:bg-navbar-nav-hover rounded-lg focus:outline-hidden focus:bg-navbar-nav-focus hs-scrollspy-active:bg-navbar-nav-active" href="#work">
            <svg class="shrink-0 size-4 me-3 md:me-2 block md:hidden" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 12h.01"/><path d="M16 6V4a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v2"/><path d="M22 13a18.15 18.15 0 0 1-20 0"/><rect width="20" height="14" x="2" y="6" rx="2"/></svg>
            Work
          </a>
          
          <a class="p-2 flex items-center text-sm text-navbar-nav-foreground hover:bg-navbar-nav-hover rounded-lg focus:outline-hidden focus:bg-navbar-nav-focus hs-scrollspy-active:bg-navbar-nav-active" href="#blog">
            <svg class="shrink-0 size-4 me-3 md:me-2 block md:hidden" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 22h16a2 2 0 0 0 2-2V4a2 2 0 0 0-2-2H8a2 2 0 0 0-2 2v16a2 2 0 0 1-2 2Zm0 0a2 2 0 0 1-2-2v-9c0-1.1.9-2 2-2h2"/><path d="M18 14h-8"/><path d="M15 18h-5"/><path d="M10 6h8v4h-8V6Z"/></svg>
            Blog
          </a>

<div class="hs-dropdown [--strategy:static] md:[--strategy:fixed] [--adaptive:none] md:[--adaptive:adaptive] [--is-collapse:true] md:[--is-collapse:false] ">
            <button id="hs-header-scrollspy-dropdown" type="button" class="hs-dropdown-toggle w-full p-2 flex items-center text-sm text-navbar-nav-foreground hover:bg-navbar-nav-hover rounded-lg focus:outline-hidden focus:bg-navbar-nav-focus hs-scrollspy-active:bg-navbar-nav-active" aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown">
              <svg class="shrink-0 size-4 me-3 md:me-2 block md:hidden" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="m3 10 2.5-2.5L3 5"/><path d="m3 19 2.5-2.5L3 14"/><path d="M10 6h11"/><path d="M10 12h11"/><path d="M10 18h11"/></svg>
              Dropdown
              <svg class="hs-dropdown-open:-rotate-180 md:hs-dropdown-open:rotate-0 duration-300 shrink-0 size-4 ms-auto md:ms-1" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="m6 9 6 6 6-6"/></svg>
            </button>

<div class="hs-dropdown-menu transition-[opacity,margin] duration-[0.1ms] md:duration-150 hs-dropdown-open:opacity-100 opacity-0 relative w-full md:w-52 hidden z-10 top-full ps-7 md:ps-0 md:bg-dropdown md:border md:border-dropdown-line md:rounded-lg md:shadow-md before:absolute before:-top-4 before:inset-s-0 before:w-full before:h-5 md:after:hidden after:absolute after:top-1 after:inset-s-4.5 after:h-[calc(100%-4px)] after:border-s after:border-navbar-nav-list-divider" role="menu" aria-orientation="vertical" aria-labelledby="hs-header-scrollspy-dropdown">
              <div class="py-1 md:px-1 space-y-0.5">
                <a class="py-2 px-3 flex items-center text-sm rounded-lg text-navbar-nav-foreground hover:bg-navbar-nav-hover focus:outline-hidden focus:bg-navbar-nav-focus" href="#first">
                  First
                </a>
                <a class="py-2 px-3 flex items-center text-sm rounded-lg text-navbar-nav-foreground hover:bg-navbar-nav-hover focus:outline-hidden focus:bg-navbar-nav-focus" href="#second">
                  Second
                </a>
                <a class="py-2 px-3 flex items-center text-sm rounded-lg text-navbar-nav-foreground hover:bg-navbar-nav-hover focus:outline-hidden focus:bg-navbar-nav-focus" href="#three">
                  Third
                </a>
              </div>
            </div>
          </div>
          
        </div>
      </div>
    </div>
    
  </nav>
</header>

<main id="content">
  <div id="scrollspy">
    <div id="landing" class="min-h-300 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Landing section</h2>
    </div>

<div id="account" class="min-h-100 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Account section</h2>
    </div>

<div id="work" class="min-h-100 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Work section</h2>
    </div>

<div id="blog" class="min-h-100 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Blog section</h2>
    </div>

<div id="first" class="min-h-260 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Dropdown: First section</h2>
    </div>

<div id="second" class="min-h-260 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Dropdown: Second section</h2>
    </div>

<div id="three" class="min-h-260 max-w-340 mx-auto py-10 px-4 sm:px-6 lg:px-8">
      <h2 class="text-lg font-semibold text-foreground">Dropdown: Third section</h2>
    </div>
  </div>
</main>

A fixed sidebar tracks sections beside a long single-page content column.

Create a responsive UI block named "Sticky Scrollspy Sidebar Nav" that visually and behaviorally matches the Preline source block. Use the destination project's existing framework, Tailwind setup, semantic tokens, component primitives, icon system, routing/link conventions, and dark-mode strategy.

Implementation preflight:
- Exact public block reference: https://preline.co/blocks/navigation-layout/scroll-navigation/#sticky-scrollspy-sidebar-nav. Open this exact anchored block and inspect its Preview and HTML tabs when browsing is available; do not use neighboring examples or surrounding docs chrome as source.
- Before writing code, inspect the destination project's package manifest, Tailwind/theme configuration, global styles, app shell/container conventions, icon system, and existing components. Reuse or compose an existing implementation when it already represents the same source partial or behavior; do not duplicate its markup, state, assets, or interaction logic.
- If neither the public reference nor local source paths are accessible, use only the explicit source-derived details in this prompt. If those details are insufficient, request the source HTML instead of guessing from the block title or category.

Source metadata:
- Catalog family: navigation-layout/scroll-navigation
- Block ID: sticky-scrollspy-sidebar-nav
- Source description: A fixed sidebar tracks sections beside a long single-page content column.
- Preview iframe: https://preline.co/blocks/navigation-layout/scroll-navigation/iframes/free/sticky-scrollspy-sidebar-nav.html (repo path: blocks/navigation-layout/scroll-navigation/iframes/free/sticky-scrollspy-sidebar-nav.html)
- Source markup reference:
  - partials/blocks/sources/pages/sticky-scrollspy-sidebar-nav.html
  - partials/blocks/sources/navbars/application-base-breadcrumb.html
  - partials/blocks/sources/sidebars/application-base-sidebar-scrollspy.html

Block-specific fidelity rules:
- For headers, navbars, sidebars, tabs, and app chrome, separate source demo wrapper width from the destination app shell. Reuse the destination project's header/container max width and padding when adapting.
- Preserve active/current states, trigger geometry, separator presence, mobile ordering, dropdown placement, and focus/keyboard behavior.
- Source content inventory (from the source markup):
  - A `w-65` fixed sidebar (`#hs-application-sidebar`, `bg-sidebar border-e border-sidebar-line`) pairs with a `lg:ps-65` content column whose inner wrapper is `min-h-300 p-4 md:p-8`.
  - The sidebar list has six top-level scrollspy links with `size-4` icons - `Dashboard`, `Users`, `Account`, `Projects`, `Calendar`, `Documentation` - then an accordion row labeled `Dropdown` holding `First`, `Second`, `Third`.
  - `Dashboard` carries the `active` class on first load; the accordion button has `aria-expanded="true"` while its `#dropdown-accordion-child` region is `hidden`, and it swaps chevron icons via `hs-accordion-active:block` / `hs-accordion-active:hidden`.
  - The `<ul>` is the scrollspy root - `data-hs-scrollspy="#scrollspy"` with `hs-scrollspy-active:bg-sidebar-nav-active` on every link - inside an `hs-accordion-group` nav using `data-hs-accordion-always-open`; the sidebar also needs HSOverlay (`hs-overlay [--auto-close:lg]`, `-translate-x-full`, `hidden`, `lg:block lg:translate-x-0`).
  - Above `lg` a `sticky top-0 z-20 bg-navbar border-y border-navbar-line` breadcrumb bar appears with a `size-8` toggle (`data-hs-overlay="#hs-application-sidebar"`, `sr-only` text `Toggle Navigation`) and the trail `Application Layout` / chevron / `Dashboard` (`aria-current="page"`).
  - The scroll targets are nine `min-h-100 scroll-mt-24` sections inside `#scrollspy` (`space-y-10 md:space-y-16`), each containing only an `h2` reading `Dashboard`, `Users`, `Account`, `Projects`, `Calendar`, `Documentation`, `First`, `Second`, `Third` - no other body copy.

<div class="sticky top-0 inset-x-0 z-20 bg-navbar border-y border-navbar-line px-4 sm:px-6 lg:px-8 lg:hidden">
  <div class="flex items-center py-2">
    
    <button type="button" class="size-8 flex justify-center items-center gap-x-2 bg-layer border border-layer-line text-layer-foreground hover:text-layer-foreground-hover rounded-lg focus:outline-hidden focus:text-layer-foreground-focus disabled:opacity-50 disabled:pointer-events-none" aria-haspopup="dialog" aria-expanded="false" aria-controls="hs-application-sidebar" aria-label="Toggle navigation" data-hs-overlay="#hs-application-sidebar">
      <span class="sr-only">Toggle Navigation</span>
      <svg class="shrink-0 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect width="18" height="18" x="3" y="3" rx="2"/><path d="M15 3v18"/><path d="m8 9 3 3-3 3"/></svg>
    </button>

<ol class="ms-3 flex items-center whitespace-nowrap">
      <li class="flex items-center text-sm text-foreground">
        Application Layout
        <svg class="shrink-0 mx-3 overflow-visible size-2.5 text-muted-foreground" width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
          <path d="M5 1L10.6869 7.16086C10.8637 7.35239 10.8637 7.64761 10.6869 7.83914L5 14" stroke="currentColor" stroke-width="2" stroke-linecap="round"/>
        </svg>
      </li>
      <li class="text-sm font-semibold text-foreground truncate" aria-current="page">
        Dashboard
      </li>
    </ol>
    
  </div>
</div>

<div id="hs-application-sidebar" class="hs-overlay  [--auto-close:lg]
  hs-overlay-open:translate-x-0
  -translate-x-full transition-all duration-300 transform
  w-65 h-full
  hidden
  fixed inset-y-0 inset-s-0 z-60
  bg-sidebar border-e border-sidebar-line
  lg:block lg:translate-x-0 lg:inset-e-auto lg:bottom-0" role="dialog" tabindex="-1" aria-label="Sidebar">
  <div class="relative flex flex-col h-full max-h-full">
    <div class="px-6 pt-4">
      
      <a class="flex-none rounded-xl text-xl inline-block font-semibold focus:outline-hidden focus:opacity-80" href="#" aria-label="Preline">
        <svg class="w-28 h-auto" width="116" height="32" viewBox="0 0 116 32" fill="none" xmlns="http://www.w3.org/2000/svg">
          <path d="M33.5696 30.8182V11.3182H37.4474V13.7003H37.6229C37.7952 13.3187 38.0445 12.9309 38.3707 12.5369C38.7031 12.1368 39.134 11.8045 39.6634 11.5398C40.1989 11.2689 40.8636 11.1335 41.6577 11.1335C42.6918 11.1335 43.6458 11.4044 44.5199 11.946C45.3939 12.4815 46.0926 13.291 46.6158 14.3743C47.139 15.4515 47.4006 16.8026 47.4006 18.4276C47.4006 20.0095 47.1451 21.3452 46.6342 22.4347C46.1295 23.518 45.4401 24.3397 44.5661 24.8999C43.6982 25.4538 42.7256 25.7308 41.6484 25.7308C40.8852 25.7308 40.2358 25.6046 39.7003 25.3523C39.1709 25.0999 38.737 24.7829 38.3984 24.4013C38.0599 24.0135 37.8014 23.6226 37.6229 23.2287H37.5028V30.8182H33.5696ZM37.4197 18.4091C37.4197 19.2524 37.5367 19.9879 37.7706 20.6158C38.0045 21.2436 38.343 21.733 38.7862 22.0838C39.2294 22.4285 39.768 22.6009 40.402 22.6009C41.0421 22.6009 41.5838 22.4254 42.027 22.0746C42.4702 21.7176 42.8056 21.2251 43.0334 20.5973C43.2673 19.9633 43.3842 19.2339 43.3842 18.4091C43.3842 17.5904 43.2704 16.8703 43.0426 16.2486C42.8149 15.6269 42.4794 15.1406 42.0362 14.7898C41.593 14.4389 41.0483 14.2635 40.402 14.2635C39.7618 14.2635 39.2202 14.4328 38.777 14.7713C38.34 15.1098 38.0045 15.59 37.7706 16.2116C37.5367 16.8333 37.4197 17.5658 37.4197 18.4091ZM49.2427 25.5V11.3182H53.0559V13.7926H53.2037C53.4622 12.9124 53.8961 12.2476 54.5055 11.7983C55.1149 11.3428 55.8166 11.1151 56.6106 11.1151C56.8076 11.1151 57.02 11.1274 57.2477 11.152C57.4754 11.1766 57.6755 11.2105 57.8478 11.2536V14.7436C57.6632 14.6882 57.4077 14.639 57.0815 14.5959C56.7553 14.5528 56.4567 14.5312 56.1859 14.5312C55.6073 14.5312 55.0903 14.6574 54.6348 14.9098C54.1854 15.156 53.8284 15.5007 53.5638 15.9439C53.3052 16.3871 53.176 16.898 53.176 17.4766V25.5H49.2427ZM64.9043 25.777C63.4455 25.777 62.1898 25.4815 61.1373 24.8906C60.0909 24.2936 59.2845 23.4503 58.7182 22.3608C58.1519 21.2652 57.8688 19.9695 57.8688 18.4737C57.8688 17.0149 58.1519 15.7346 58.7182 14.6328C59.2845 13.531 60.0816 12.6723 61.1096 12.0568C62.1437 11.4413 63.3563 11.1335 64.7474 11.1335C65.683 11.1335 66.5539 11.2843 67.3603 11.5859C68.1728 11.8814 68.8806 12.3277 69.4839 12.9247C70.0932 13.5218 70.5672 14.2727 70.9057 15.1776C71.2443 16.0762 71.4135 17.1288 71.4135 18.3352V19.4155H59.4384V16.978H67.7111C67.7111 16.4117 67.588 15.91 67.3418 15.473C67.0956 15.036 66.754 14.6944 66.317 14.4482C65.8861 14.1958 65.3844 14.0696 64.812 14.0696C64.2149 14.0696 63.6856 14.2081 63.2239 14.4851C62.7684 14.7559 62.4114 15.1222 62.1529 15.5838C61.8944 16.0393 61.762 16.5471 61.7559 17.1072V19.4247C61.7559 20.1264 61.8851 20.7327 62.1437 21.2436C62.4083 21.7545 62.7807 22.1484 63.2608 22.4254C63.741 22.7024 64.3103 22.8409 64.9689 22.8409C65.406 22.8409 65.8061 22.7794 66.1692 22.6562C66.5324 22.5331 66.8432 22.3485 67.1018 22.1023C67.3603 21.8561 67.5572 21.5545 67.6927 21.1974L71.3304 21.4375C71.1458 22.3116 70.7672 23.0748 70.1948 23.7273C69.6285 24.3736 68.896 24.8783 67.9974 25.2415C67.1048 25.5985 66.0738 25.777 64.9043 25.777ZM77.1335 6.59091V25.5H73.2003V6.59091H77.1335ZM79.5043 25.5V11.3182H83.4375V25.5H79.5043ZM81.4801 9.49006C80.8954 9.49006 80.3937 9.29616 79.9752 8.90838C79.5628 8.51444 79.3566 8.04356 79.3566 7.49574C79.3566 6.95407 79.5628 6.48935 79.9752 6.10156C80.3937 5.70762 80.8954 5.51065 81.4801 5.51065C82.0649 5.51065 82.5635 5.70762 82.9759 6.10156C83.3944 6.48935 83.6037 6.95407 83.6037 7.49574C83.6037 8.04356 83.3944 8.51444 82.9759 8.90838C82.5635 9.29616 82.0649 9.49006 81.4801 9.49006ZM89.7415 17.3011V25.5H85.8083V11.3182H89.5569V13.8203H89.723C90.037 12.9955 90.5632 12.343 91.3019 11.8629C92.0405 11.3767 92.9361 11.1335 93.9887 11.1335C94.9735 11.1335 95.8322 11.349 96.5647 11.7798C97.2971 12.2107 97.8665 12.8262 98.2728 13.6264C98.679 14.4205 98.8821 15.3684 98.8821 16.4702V25.5H94.9489V17.1719C94.9551 16.304 94.7335 15.6269 94.2841 15.1406C93.8348 14.6482 93.2162 14.402 92.4283 14.402C91.8989 14.402 91.4311 14.5159 91.0249 14.7436C90.6248 14.9714 90.3109 15.3037 90.0831 15.7408C89.8615 16.1716 89.7477 16.6918 89.7415 17.3011ZM107.665 25.777C106.206 25.777 104.951 25.4815 103.898 24.8906C102.852 24.2936 102.045 23.4503 101.479 22.3608C100.913 21.2652 100.63 19.9695 100.63 18.4737C100.63 17.0149 100.913 15.7346 101.479 14.6328C102.045 13.531 102.842 12.6723 103.87 12.0568C104.905 11.4413 106.117 11.1335 107.508 11.1335C108.444 11.1335 109.315 11.2843 110.121 11.5859C110.934 11.8814 111.641 12.3277 112.245 12.9247C112.854 13.5218 113.328 14.2727 113.667 15.1776C114.005 16.0762 114.174 17.1288 114.174 18.3352V19.4155H102.199V16.978H110.472C110.472 16.4117 110.349 15.91 110.103 15.473C109.856 15.036 109.515 14.6944 109.078 14.4482C108.647 14.1958 108.145 14.0696 107.573 14.0696C106.976 14.0696 106.446 14.2081 105.985 14.4851C105.529 14.7559 105.172 15.1222 104.914 15.5838C104.655 16.0393 104.523 16.5471 104.517 17.1072V19.4247C104.517 20.1264 104.646 20.7327 104.905 21.2436C105.169 21.7545 105.542 22.1484 106.022 22.4254C106.502 22.7024 107.071 22.8409 107.73 22.8409C108.167 22.8409 108.567 22.7794 108.93 22.6562C109.293 22.5331 109.604 22.3485 109.863 22.1023C110.121 21.8561 110.318 21.5545 110.454 21.1974L114.091 21.4375C113.907 22.3116 113.528 23.0748 112.956 23.7273C112.389 24.3736 111.657 24.8783 110.758 25.2415C109.866 25.5985 108.835 25.777 107.665 25.777Z" class="fill-primary" fill="currentColor"/>
          <path d="M1 29.5V16.5C1 9.87258 6.37258 4.5 13 4.5C19.6274 4.5 25 9.87258 25 16.5C25 23.1274 19.6274 28.5 13 28.5H12" class="stroke-primary" stroke="currentColor" stroke-width="2"/>
          <path d="M5 29.5V16.66C5 12.1534 8.58172 8.5 13 8.5C17.4183 8.5 21 12.1534 21 16.66C21 21.1666 17.4183 24.82 13 24.82H12" class="stroke-primary" stroke="currentColor" stroke-width="2"/>
          <circle cx="13" cy="16.5214" r="5" class="fill-primary" fill="currentColor"/>
        </svg>
      </a>
      
    </div>

<div class="h-full overflow-y-auto [&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar-thumb]:rounded-none [&::-webkit-scrollbar-track]:bg-scrollbar-track [&::-webkit-scrollbar-thumb]:bg-scrollbar-thumb">
      <nav class="hs-accordion-group p-3 w-full flex flex-col flex-wrap" data-hs-accordion-always-open>
        <ul class="flex flex-col space-y-1" data-hs-scrollspy="#scrollspy">
          <li>
            <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active active" href="#dashboard">
              <svg class="shrink-0 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" ><path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
              Dashboard
            </a>
          </li>

<li>
            <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#users">
              <svg class="shrink-0 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" ><path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"/><circle cx="9" cy="7" r="4"/><path d="M22 21v-2a4 4 0 0 0-3-3.87"/><path d="M16 3.13a4 4 0 0 1 0 7.75"/></svg>
              Users
            </a>
          </li>
          
          <li>
            <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#account">
              <svg class="shrink-0 mt-0.5 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="18" cy="15" r="3"/><circle cx="9" cy="7" r="4"/><path d="M10 15H6a4 4 0 0 0-4 4v2"/><path d="m21.7 16.4-.9-.3"/><path d="m15.2 13.9-.9-.3"/><path d="m16.6 18.7.3-.9"/><path d="m19.1 12.2.3-.9"/><path d="m19.6 18.7-.4-1"/><path d="m16.8 12.3-.4-1"/><path d="m14.3 16.6 1-.4"/><path d="m20.7 13.8 1-.4"/></svg>
              Account
            </a>
          </li>
          
          <li>
            <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#projects">
              <svg class="shrink-0 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect width="20" height="14" x="2" y="7" rx="2" ry="2"/><path d="M16 21V5a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v16"/></svg>
              Projects
            </a>
          </li>

<li class="hs-accordion" id="dropdown-accordion">
            <button type="button" class="hs-accordion-toggle w-full text-start flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" aria-expanded="true" aria-controls="dropdown-accordion-child">
              <svg class="shrink-0 size-4" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="m3 10 2.5-2.5L3 5"/><path d="m3 19 2.5-2.5L3 14"/><path d="M10 6h11"/><path d="M10 12h11"/><path d="M10 18h11"/></svg>
              Dropdown

<div id="dropdown-accordion-child" class="hs-accordion-content w-full overflow-hidden transition-[height] duration-300 hidden" role="region" aria-labelledby="dropdown-accordion">
              <ul class="ps-8 pt-1 space-y-1">
                <li>
                  <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#first">
                    First
                  </a>
                </li>
                <li>
                  <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#second">
                    Second
                  </a>
                </li>
                <li>
                  <a class="flex items-center gap-x-3.5 py-2 px-2.5 text-sm text-sidebar-nav-foreground rounded-lg hover:bg-sidebar-nav-hover focus:outline-hidden focus:bg-sidebar-nav-focus hs-scrollspy-active:bg-sidebar-nav-active" href="#third">
                    Third
                  </a>
                </li>
              </ul>
            </div>
          </li>
        </ul>
      </nav>
    </div>
    
  </div>
</div>

<div class="lg:ps-65">
  <div class="min-h-300 p-4 md:p-8">

<div id="scrollspy" class="space-y-10 md:space-y-16">
      <div id="dashboard" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Dashboard</h2>
      </div>

<div id="users" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Users</h2>
      </div>

<div id="account" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Account</h2>
      </div>

<div id="projects" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Projects</h2>
      </div>

<div id="calendar" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Calendar</h2>
      </div>

<div id="documentation" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Documentation</h2>
      </div>

<div id="first" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">First</h2>
      </div>

<div id="second" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Second</h2>
      </div>

<div id="third" class="min-h-100 scroll-mt-24">
        <h2 class="text-lg font-semibold text-foreground">Third</h2>
      </div>
    </div>
    
  </div>
</div>

Scroll Navigation

Header Scrollspy Nav with Dropdown Free

Sticky Scrollspy Sidebar Nav Free