Change the number of widgets when the `fit` class is added to Responsive footer widgets https://github.com/cyberchimps/responsivecore/commit/f924c3a9e90233af55c606d6ca222ff70a680d76

functions.php

<?php
add_filter('responsive_number_footer_widgets', 'responsive_child_number_footer_widgets');
function responsive_child_number_footer_widgets() {
	$divider = '5';
	return $divider;
}