Mobile-first design means creating apps or websites that work great on your...

https://mega-wiki.win/index.php/What_is_a_CDN_and_Do_I_Need_One_for_a_Small_Site%3F

Mobile-first design means creating apps or websites that work great on your phone before anything else. It’s all about speed, easy-to-use buttons that fit your fingertips, and simple menus that get you where you want fast