Responsive Intro component with sign-up form using CSS and JavaScript

What are you most proud of, and what would you do differently next time?

I'm proud of

• learning more about HTML forms since they are very important component of any website
• implementing custom error messages on empty input submission
• manipulating styling of input fields using JavaScript

What challenges did you encounter, and how did you overcome them?

• coming up with the logic of manipulating HTML form and input
• spent a lot of time trying different logics, debugging code, searching online for solutions
• there are still some improvements left in this solution like adding error-icon in empty input fields, but I was exhausted of implementing different logics and debugging code 😅. I will get back to the design and will upload an improved version soon.

What specific areas of your project would you like help with?

I would like to know approach of experienced frontend developers to design layouts like this one. How to think of initial basic structure. And sources to find help especially on JavaScript when you feel struck.