Formatting Slider Upfront Theme Gillie

I am using the theme Gillie and somehow I have messed up the formatting on the homepage testimonials slider. I have managed to get the text to appear the way I wanted, but somehow the images wrappers have been shrunk, and I can't figure out how to resize them. *not a CSS expert* that's why I like Upfront so much...until I do something like this and can't fix it. (support access granted just in case you need it)

Thanks for the help.