Site on mobile has overflowing text and read more does not work

Hi, I am trying to create the testimonial carousel as i have numerous reviews with some being extra long. On the desktop, the boxes are all aligned. However, on mobile, the read more doesnt work as the full long review is showing up, and hence it does not have a standardised height with the other reviews. Is there a way to fix this? I’ve the latest most up to date app installed.