White space bottom of widget

Your request is out of the scope of our plugin, as it is a mere CSS issue.
Anyway, you should adjust your theme’s style.css (line 547):

.featured-center-right, .featured-center-left, .featured-middle {
min-height: 260px;
}

with a lower value, i.e.:

.featured-center-right, .featured-center-left, .featured-middle {
min-height: 220px;
}