The website links to Flexbox Froggy but via a link that requires you to register an account, but you can access it directly via https://flexboxfroggy.com/. - Source: Hacker News / 11 days ago

Flexbox Froggy: Learn CSS Flexbox by playing this game. - Source: dev.to / 4 months ago

Flexbox is an important topic of CSS and you can learn it by playing a game called Flexbox Froggy. You can easily learn the properties of Flexbox while having some fun. - Source: dev.to / 6 months ago

This started improving for me recently when I spent more time really learning flexbox and flexgrid. They are part of CSS so no installs needed. It’s a different way of thinking but I’m finally good enough with flexbox that I can tell when I need it and make productive use of it. Knowing these patterns makes a difference for me, since now I can assemble the blocks better than before when I’d just try mostly random... - Source: Hacker News / 8 months ago

There are some games which teach them quickly. http://flexboxfroggy.com/ http://flexboxdefense.com/ and https://cssgridgarden.com/ perhaps 1-2 hours to do all three and then layour is a breeze. Source: 11 months ago

Wow, look at you! Email newsletter, Auth, Storage, Community... you're starting to need some serious software now around your swipe file, and you STILL need to figure out your social media distribution. You don't HAVE to have a separate platform — I often use my own Twitter as a flexible social Swipe File, and Little Big Details is a Swipe File hosted on Tumblr with distribution, storage, and social features built... - Source: dev.to / almost 3 years ago

That sort of UI deserves a mention on Little Big Details. Source: almost 3 years ago

I don't believe it's updated anymore, but there was an entire website dedicated to this.[1] [1]: https://littlebigdetails.com. - Source: Hacker News / about 3 years ago