Mobile-first design means building apps and websites to work great on phones...

https://holdensimpressivethoughts.lumenforgex.com/posts/mobile-first-design-for-news-sites-what-should-load-first

Mobile-first design means building apps and websites to work great on phones first. It’s all about speed, so pages load fast when you’re on the go. Buttons and menus are easy to tap with your fingers, not just click