Huddle landing page with curved sections master - html/css, js

Hi everyone,

this is my first challenge after one year. I didn't code whole year. This challenge took me quite long because i had to remmember what to do.

Now my questions:

1. Do I use media queries in right way? I am not sure if I should use min width instead of max width. I started with desktop version.

2. I had problem with if statments. When I wanted to set margin top on error message after submiting bad mail address(depends on screen size) I had to put window.innerWidth >= 1201 on the bottom of the statments. When I wanted to put it on top this statment didn't work and was set value from second statement. I dont know why.

Thank you for your time to check my solution.

L.