Description
Starts as a single button, expands into an email field on click. The Button Expandable Mini Form is a complete, ready-to-use mini form built with plain HTML, CSS and JavaScript — no frameworks, plugins, or build tools required. It’s fully responsive, works on any website or CMS, and is easy to restyle with a handful of CSS color variables at the top of the file. Out of the box it’s wired to submit to any form backend (Formspree, Zapier, Mailchimp, ConvertKit, or Google Sheets) — just swap in your endpoint URL. Layout: floating expandable button. Best for: low-friction capture anywhere on the page.
