Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
A modest JavaScript framework for the HTML you already have.
Tally is the simplest way to create free forms & surveys. Create any type of form in seconds, without knowing how to code, and for free.