>Foundation seems to be slightly ahead in moving to newer technologies (mobile-first, border-sizing:border-box, ..etc). Check out "Layout and grid system" sect

>Foundation seems to be slightly ahead in moving to newer technologies (mobile-first, border-sizing:border-box, ..etc). Check out "Layout and grid system" section here: https://github.com/twitter/bootstrap/pull/6342 https://github.com/twitter/bootstrap/pull/6342, it specifically mentions border-sizing: border-box is being used and in the top in bold it says "Bootstrap 3 will be mobile-first"