Intro Component With Signup Form Using BEM, Sass, Vanilla Javascript

Hi Everyone! I finished another great project using html, sass, js. It took me quite long time to finish. What lession I learned from this project:

• I have to say that form validation is one of my weeknesses. But after practicing this project, I know what I have to do to get the job done. I realise that the importance of regular expression in form validation. But the syntax is so complicated :). I will learn it anyways.
• I use Grid for this layout and again it's awesome 😎. I will practice more and more layout using CSS grid.
• I use ES6 module to separate Javascript but my code still messy :)). Can anyone take a look at my code and give a feedback? I really appreciated any suggestions and feedbacks. Thank you all and happy coding!