Plugin not Responsive with my theme

Hi, I am using RT-theme15 with your plugin, and for the most part everything works great except for the fact that the information from the plugin isn’t responsive. Is there a way to make the plugin responsive with the theme I am using, and if so what do I have to do to make that happen?

Website: http://lakelandestates.com/listings/

https://wordpress.org/plugins/wp-property/