Custom CSS for Flow Flow (instagram feed) wordpress plugin

I am using wordpress plugin called 'flow flow lite' as an instagram feed on my wordpress website. I would like someone to give me some custom CSS that i can put in the plugin to change the look of the stream a little bit. See attached screenshot. My website is lada.com.au. I'm hoping you don't need access to my website and you can just download the plugin and try it on your site. once i have the CSS i should be able to make small adjustments without your help.