Converted ems to rems

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Removed extra semi-colon

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Dropped attempt at supporting less than or equal to IE8

Currently not planning to invest a lot of time for building support for
legacy IE. Maybe in the future, but for now its IE 9+, especially since
Foundation Framework's built for supporting IE 9+ and other modern
browsers with support for responsive web design.

Signed-off-by: Byron Sanchez <byron@hackbytes.com>