Responsive ping coming soon page with SASS and vanilla JS

Hi Frontend Mentor community 👋

This is my solution for the ping comming soon page. The css part of the challenge was pretty straight forward, the thing that took me the most time was figuring out the script to modify the document. Ended up creating a regex validation to match the e-mail and modify the page accordingly. What do you think of my solution? Was a better way to do it?

Thanks in advance for the feedback and the tips!😄