Testing Columns

Spine colors
Transparency
Spine options
Signatures
Grid behavior
Max sizes
Show wireframe
a block element, not a .row
1-10-1
2-8-2
3-6-3
4-4-4
5-2-5
6-6
5-7
4-8
3-9
2-10
1-11
Fifteen Twelfths
Five Quarters
Manual Controls
4-4-4
.at-large-full-width
.at-medium-full-width
.at-medium-half-width .at-small-full-width