Introduction
Take a look at this Codepen by the front-end developer Sean Free at https://codepen.io/seanfree/full/eBppyE/ . It paints an idyllic picture of a calm, barely shimmering lake, with snow-covered mountains rising in the background and forests in the distance. No signs of other people, no boats, no noise: sounds like the perfect advert for a travel brochure!
I’ll bet that, at first glance, you’d think that this is some sort of animated GIF image, or even a little trickery with video, right? After all, how could we achieve this animated effect…?
Well, what if I said there isn’t a single animated GIF ...
