News Homepage built with HTML, CSS Grid and Flex and some Javascript

I am very new to frontend development and this is actually my very first complete frontend project. I'm curious as to whether I approached the task in the right way, that is, the way I structured my HTML code or if there was a better way I could have done it. I am also wondering if there's a way to write less CSS and achieve my desired results. I want to learn to be as efficient as possible and avoid redundancy. Being my first project I would appreciate any feedback/criticism as it would help me learn more and improve my work. Thank you in advance!