Most add-an-animation jobs arrive as a library drop-in: a Lottie file, a GSAP timeline, a plugin. Those hold until the design moves, and then nothing lines up again. I write the interaction by hand instead, so every number in it comes from one place.

This adds one interaction to one page of your existing site: a press or hover state, a scroll-triggered reveal, a cursor-driven element, or a small SVG piece that responds to input. Before I write anything, I tell you what I think the interaction should be, and what I would leave out.

You receive a self-contained block of HTML, CSS and JavaScript that drops into your page, plus a note on what each value controls. No animation library, no build step, no third-party requests at runtime.

Included rather than optional: prefers-reduced-motion is honoured, the keyboard reaches where the cursor does, and axe-core runs clean at WCAG 2.2 AA in every state, including the ones that only exist behind the interaction. I check at 390, 1280, 1440 and 1920 px and send you the numbers rather than assuming them.

Not covered: redesigning the page, video or 3D, or animating a design that does not exist yet. If your builder blocks custom CSS or JavaScript, tell me before ordering.

You can press and hold a working example here: https://lab.forblune.com