Some fantastic behind-the-scenes stuff about Stripe’s design work by Benjamin De Cock. Absolutely everything is clever and using very modern techniques.
Plus one I’d never seen before:
Connect’s landing page uses the new Intersection Observer API which provides a much more robust and performant way to detect the visibility of an element … The
observeScroll helper simplifies our detection behavior (i.e. when an element is fully visible, the callback is triggered once) without executing anything on the main thread.
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Connect: behind the front-end experience is a post from CSS-Tricks