Thanks a lot! I've been looking at a lot of different CSS frameworks lately. So far I'm considering Semantic UI, Bulma, Tachyons, Tailwind, and a few others. I initially skipped over Spectre because I thought it was a just a lightweight grid framework, and didn't realize it had so many components in less than 10kb. That's really amazing, and I also love the super clean design. You also get a little bit of Tailwind with the functional classes.
The only thing I don't like is how it uses native browser select dropdowns. They're really ugly, so it would be nice if there was a proper select component (although I can just add my own CSS or use Select2.)
Anyway, this looks really awesome. Especially for a landing page that needs to load really fast.