Add the code below to your custom css option.
.directory-results {
width: 100%!important;
padding-left: 0px!important;
padding-right: 0px!important;
}
Regarding the size of the map, you can change it inside the file single-directory located at cardinal/swift-framework/layout
Find this line and replace the 400 by your desired value.
<?php echo do_shortcode('[spb_gmaps size="400" type="roadmap" zoom="14" saturation="color" fullscreen="yes" width="1/1" el_position="first last"] [spb_map_pin pin_title="' . get_the_title() . '" address="' . $map_address .'" pin_latitude="' . $map_lat_cord . '" pin_longitude="' . $map_lng_cord . '" pin_image="' . $map_pin . '" pin_link="' . $map_pin_link . '" pin_button_text="' . $map_pin_button_text . '" width="1/1" el_position="first last"][/spb_map_pin] [/spb_gmaps]'); ?>
-Rui