Search results div size

Tijmen…
Im trying to get the store results to load more than 3 results initially. I understand I can increase the map size within the interface and have it increase the search results but i’m trying to leave the map at one size and have the results a different size. See the CSS below. Can you help me see where this is wrong?

http://03d41b7.netsolhost.com/wordpress1/retail-locator/

/* expands the search results list height */

#wpsl-direction-details, #wpsl-gmap {
height: 400px !important;
}

#wpsl-stores {
height: 700px !important;
}

https://wordpress.org/plugins/wp-store-locator/