Cookies and storage
rb_motion (browser storage): set only when you press Pause motion, and removed when you press Resume motion.
Form protection: on the demo and store forms, a spam-protection service checks your browser. It runs only on those pages, once you start filling in the form.
Scroll position (browser session storage): the site remembers where you were on a page, so the back button returns you there. It is deleted when you close the tab.
The site sets no other cookies and stores nothing else in your browser.