HTML-CSS and lil bit JS // Not responsive just for browser

Hello. I'm only 1.5 months into learning Web Development. I started the challenge without any prior knowledge of Javascript. You will notice that I the further you traverse through the website, the more JS I have used. Not a responsive website by any means. And there are a lot of design faults. Would really love to get a feedback on how I did on this challenge and what I can improve upon.