What do I need, and how can I create a look alike website?

first of all thanks for your future help.
I have just found a website allowing me to build my own website from an excel format (https://siteoly.com), I would like to know what are the skills and methods used to build this same website by hand using html / css / php etc... My first difficulty is the presentation in card/grid and the database as present here : Présentation i'd like to do. Thank you very much!