HTML was and is wonderful in its simplicity and flexibility. CSS was not fit for purpose until relatively recently, and is still pretty limited and broken. It’

HTML was and is wonderful in its simplicity and flexibility. CSS was not fit for purpose until relatively recently, and is still pretty limited and broken. It’s telling that you mention features of CSS which were only recently usable. Problems with CSS - lack of a proper grid till recently, lack of variables, byzantine box model rules, a profusion of units (px,em,en,%), lack of simple computed widths etc. All these are fixable/being fixed but I would not be sorry if the whole mess was thrown out and a more considered styling language introduced.