Amandeep Pasricha14,931 Points
Why didn't we give the footer a max-width of 1050px as well?
Just asking the above.
Niki Molnar23,312 Points
In this design, the footer is 100% of the screen width, so it never needs to change with different screen sizes. You could, of course, match it to the width of the container - but it's just a design decision.
Of course, with smaller screen sizes, you may want to change the font size of the footer text in media queries, depending on how much text you have in it.
Hope that helps!