As of now, the gutter (space between the columns) is hardcoded to 15 pixels.

Perhaps we could have a server side property, say Gutters, that accepts an integer value and results in a generated class, say t-gutter-10. We can also have predefined styles, say 10, 20, 15 etc so the base variants are covered.

If a developer wants, say 56 pixels gutter, it can be either set directly overwriting the styles or scoping trough the generated class t-gutter-56.