Responsive Advice Generator App using HTML5, CSS3 & Vanilla JS

First time doing a front-end challenge involving APIs and data fetching, so there were definitely struggles along the way. I really need advice/feedback on the functionalities in this project, so if anyone has suggestions on how to improve, please don't hesitate to comment on this submission. Thank you :D

Follow-up question: what do you think about the loading screen implementation I made ? (I wasn't required but I thought it was a nice way to enhance user interest)