Testimonial Slider Question

At the bottom of my homepage I have a testimonial slider with all of my testimonials. All of the testimonials are obviously different lengths and I noticed that the section height adjusts for each of them by going up and down. I realize that this is the way this element works but is there some quick css you can provide me that will have the section stay one size to accommodate for the longest testimonial so it doesn’t get larger and smaller? Thanks!