问题

回答1:
Here is the perfect tutorial about gallery with different size items.
And the main point is: You can't achieve this with gallery()
mixin, but it's possible with span()
mixin by something like
$susy: (
columns: 12,
output: isolate
);
// Assuming output is set to isolate
.gallery__item {
margin-bottom: gutter();
@include span(4 of 12 split);
&:nth-child(4),
&:nth-child(7), {
width: span(8 of 12 split);
}
}
来源:https://stackoverflow.com/questions/25958490/sass-susy-gallery-element-that-spans-two-columns