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The page this skill built from examples/northwind, working in your browser. Opens in a new tab.

5.3-second example rendered by this skill from examples/northwind · 1280×720

Example settingswhat each example above was built from

examples/northwindhero.json
Brand
Northwind
Headline
Quiet power

What you get

  • A one-page hero and a paste-in embed with your name, words and links
  • A film that loops forever with no visible restart, checked frame against frame
  • A tall cut of the film for phones, so the subject fills a portrait screen
  • Inter Tight and Inter in this hero's own colors, with words that rise in once as the page opens
  • A poster frame for reduced motion and while the film loads, so it is never blank
  • Checks at 390, 768, 1280 and 1920 px: 14 px minimum text, a headline nothing touches, 44 px tap targets, no overflow
  • A 1080p MP4 and a 1080x1920 phone MP4, rendered frame by frame
  • Open-source licenses for every part it builds on

Good fit

  • Energy, climate and infrastructure brands open on white turbines turning slowly above a sea of fog at blue hour, with a heavy uppercase headline.
  • The red aviation lights on the turbines give the one accent colour, picked up by the main button.
  • On a phone the nearest turbine fills the top of the screen and the headline and button sit in the dark fog below it.

Not for

  • Your own video: the layout and colours are set for this film (tall white wind turbines turning slowly above a sea of fog at blue hour)
  • Changing the colors, fonts or layout through settings (every word and link is yours; the look is fixed)
  • Long headlines: two short lines, with limits the build enforces
  • Sound: browsers only autoplay muted video, and the film is silent
  • Full landing pages below the hero (see the Landing Pages series)

About this skill

A full-screen website hero on five seconds of generated film that loops with no seam: tall white wind turbines turning slowly above a sea of fog at blue hour, their red aviation lights blinking. It uses a centred layout: the wordmark in the middle of the bar, a two-line headline centred and set very large, the introduction under it and the button at the foot. Wide screens get the wide film and phones a tall cut framed on the subject, so a phone never shows a letterbox or an empty half; every text is at least 14 px and nothing touches the headline. Your agent writes one hero.json with your words and links; the build checks every length, a check at four widths enforces the layout rules and the seamless loop, and a recorder makes 1080p and phone MP4s. It suits an energy, climate, infrastructure, engineering or any calm, serious, forward-looking brand.

Example request

Make a Fog Turbines hero for our community energy co-op: 'Clean / power', a join button, and record the phone video.

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Details

Output
Full-screen hero on a generated film that loops with no seam · tall cut for phones · page + embed · 1080p and phone MP4s
Needs
Node.js 18+, Chrome, and ffmpeg for the loop check and the video
Series
Loop Heroes · 8 skills
Updated
Nov 2, 2026
Checked
Nov 2, 2026: its own commands ran and passed. That is a working check, not a security audit.

Generates with

A film generated for Lookbk with the same first and last frame, plus a tall cut for phonesA small inlined runtime and CSS entrances (no libraries)Headless Chrome checks and a frame-stepped recorder + ffmpeg
Good forBrandProduct launchWeb design

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FAQ

Do the blades jump when the film loops?

No. The film starts and ends on the same frame, so the blades come back to where they began; the check measures it on both films.

Can the headline be in lower case?

The template sets it in capitals with tight tracking, which is the design. The words are yours; the case is fixed.

Is it heavy to load?

The wide film is 1280x720 and the tall cut is separate, so a phone loads only the tall one. The first frame shows at once as a still while the film loads.

Which agents is Fog Turbines Hero written for?

Any agent that reads SKILL.md folders, including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI and OpenCode.

Do I own what I make with it?

Yes. Everything your agent makes with this skill is yours, including for client and commercial work.

What if it doesn’t work for me?

Email support@lookbk.dev within 7 days of buying and we’ll fix it or refund you.

Credits and licensesWritten by Lookbk

the film, generated for Lookbk from a scene written for Lookbk (a still image animated into film with the same first and last frame), and the layout, template and Loop Stage kit, all written for Lookbk. The fonts are from Google Fonts. Written by Lookbk, no third-party code.

Credits and licenses for the open-source software and fonts it uses are in NOTICE.md inside the download.