[tom1337]

The https://mantine.dev docs rule. They provide a lot of examples on the landing page and if you navigate through the page each component has a great explainer with a playground and all possible settings you can give. Direct with links to the source code and a great CMD+K search.

[siddthesquid]

Great example. would not expect anything less from a project focused on UI elements. https://www.chakra-ui.com/ as well.

Blog posts and websites that talk about web UI theory or features that demo their components natively on their site definitely stick out and is a sign of a good developer team. I understand if sites otherwise can't include them because they are using a blog or doc generating/hosting service, but they lose the opportunity of sticking out.