Reference: https://medium.com/@nmayurashok/file-and-folder-structure-for-web-development-8c5c83810a5

Reference: 6 Common System Design Interview Questions https://www.indeed.com/career-advice/interviewing/system-design-interview-questions#:~:text=An%20interview%20for%20a%20system,to%20possible%20questions%20about%20them.

In CSS documentations, there’re many mentions of line box, for example here, what does it exactly mean?