Custom Page Titles in Genesis Featured Posts Combo Plugin's Widget. https://sridharkatakam.com/custom-page-titles-in-genesis-featured-posts-combo-plugins-widget/

functions.php

// Register a custom image size for Home Boxes images
add_image_size( 'home-box', 300, 300, true );

gistfile1.php

add_action( 'gfpc_before_entry', 'gfpc_four_cols', 10, 2 );
function gfpc_four_cols( $instance, $widget_id ) {
	if ( ( $widget_id == "gfpc-widget-2" ) && ( $instance['layout'] == 'layout-seven' ) ) {
		add_filter( 'post_class', 'adding_one_fourth_class' );
	}
}

add_action( 'gfpc_after_entry', 'gfpc_remove_filter', 10, 2 );
function gfpc_remove_filter( $instance, $widget_id ) {
	if ( ( $widget_id == "gfpc-widget-2" ) && ( $instance['layout'] == 'layout-seven' ) ) {
		remove_filter( 'post_class', 'adding_one_fourth_class' );
	}
}

function adding_one_fourth_class( $classes ) {
	$classes[] = "one-fourth";
	return $classes;
}

gistfile2.php

add_filter( 'gfpc_do_post_title_gfpc-widget-2', 'sk_custom_title', 10, 2 );
function sk_custom_title( $title, $instance ) {
	$replace = 'href=';
	$replace_with = 'class="button" href=';

	$title = str_replace( $replace, $replace_with, $title );

	return $title;
}

style.css

#gfpc-widget-2 .layout-seven .one-fourth:nth-of-type(4n+1) {
	clear: both;
	margin-left: 0;
}