From Simple To Complex
Modern, so called, responsive web-design prescribes defined course of action. There is mobile-first paradigm, quite simply an old famouse sentence 'from simple to complex'! First we build skeleton and only after that we can pull on an outer hull. Same way in physical world it is much easier to make load-carrying elements before and make outer parts after. Because it is quite crazy thing to make at outer hull of airplane and after that painfully shoving spars, stringers and frames inwards! Same crazyness about making a basement of the house after completing another floors! Strictly said, it is possible to do from outside into inside, but these exceptions only prove a rule! For us every rule is a vector and direction to act, but every individual case makes unique demands and restrictions, that is why rules for us not a dogma but directives!