GM is getting into the electric bike business

Hi guys and gals,

Does anyone have an idea how they would tackle an interaction / animation like the example provided by Tech Crunch.

When a user scrolls the page, the “cancel” button fixed at the top right displays an animation around the circle radius indicating where the user is on the page.

^ Basically, an indicator on scroll of scroll location around a circle.

If anyone has any ideas, please let me know!

Thanks!


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