Can you make a summary block dynamic?

Site: https://chrissytolley.com/Template: Shift

If you scroll down to Testimonials, you'll see I've used a summary block carousel for testimonials created in a blog format. Since the longest quote is first, excessive white space is not a problem. However, as you scroll through, you'll see a lot of white space when the quotes are shorter.

Is there a way to make the summary block carousel dynamic so that it "shrinks up" when the testimonials are shorter, and doesn't create a huge block of white space between the carousel and the next section header? (I am comfortable with CSS.)

Any help/insight is greatly appreciated, thank you.