This project creates additional gutter sizes for Foundation 6, based on multipliers and the responsive gutter settings.
$grid-column-variant-gutter: (
'half' : .5,
'double' : 2
);
@include generate-variant-gutter-classes();
<div class="row gutter-half">
<div class="column small-6">Content</div>
<div class="column small-6">Content</div>
</div>