the parent of each row is a div .split-50

float
50% wide
auto height
column 2/2
column 1/2
column 2/2
the parent of each row is a div .split-50

float
50% wide
auto height
column 2/2
this is just a div with the .column class applied
the parent of this row is a div .split-66

float
66.66% wide
auto height
column 2/2
this is just a div with the .column class applied. the parent is a div .split-33

float
33.34% wide
auto height