Sizing LayerSlider for mobile compatability

I've noticed that my layerslider banner shrinks itself down when my window is resized or I load the site on my iphone. Is there a way to control the minimum size of the banner so that it doesn't shrink past a certain point (remaining centered on screen, and allowing the text to observe the window boundary but the slide image to overflow)? As it is, the banner becomes way too small on mobile and the text on slides becomes illegible.