Fixing the height of Testimonial Color Background [Turbo Portland]

Highlighted
Excursionist
17 1 1

Hello

The size (height) of the colour background of the text Testimonials section on the homepage changes according to the length of the testimonials shown at that moment.

I would like for the color background to stay the same size/height (that of the longest testimonial) for all the testimonials. And I would like all the testimonials to be displayed at the (vertical) centre of the background. 

Thank you very much for your help.

URL calzotto.com
Turbo Portland Theme