Actually most of this is solvable since CSS positioning was introduced (maybe 10 years ago?)
Not even fixed or absolute positioning can guarantee you that the element will end up at the client's screen at exactly the place you thought you put it. Most of the time you end up with ugly scroll bars and overlapping elements or empty spots.
And in any case I consider CSS positioning which takes the elements out of the normal flow an aberration if used to try to fix the layout, but YMMV.
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James