Backend guy here. I've been looking for something like this as well. Google Sheets, Zoho Calc, Airtable and Streamlit offer functionality I like but I want so

Backend guy here. I've been looking for something like this as well. Google Sheets, Zoho Calc, Airtable and Streamlit offer functionality I like but I want something that will work in a local browser without a cloud link. Ideally something that could be served statically as you describe from Vercel or perhaps a webserver on the user's local machine. I couldn't find anything so I started playing around with Pyodide, Elm, Typescript, XState and Tauri before discovering Yew and WebAssembly. I like the idea of a small interactive calculation engine in Rust with a customizable table/spreadsheet interface that a user could load and run entirely in their browser. CSS is indeed a beast. I tried avoiding it but eventually decided to see how far I can go with just Bulma, CSS media queries and CSS grid-template-areas. I've started making mockups with Zola to figure out the subset of CSS that will work for me. Then I hope to port or incorporate the Zola templates in my Yew application.