Took me a while to get the hang of the builder and the little quirks of Gutenberg. Also the major update to v1.1x happened in the middle, which made many things easier, but I had to restart fresh due to some issues being introduced.
Nice and clean site. I would suggest though to reduce your image file sizes. At least the blue background pattern. It’s getting used a lot on the page, and it’s over 600kb each, even on the small cards. Using tinypng.com I was able to reduce the file size to 86kb, without any loss of quality.