Coding bootcamp testimonials with animation

Recently finished the JavaScript30 course, so this is a perfect practice so see if I learned anything.

Did run into some issues with timing the text change, tried using setTimeout() to delay it by half of the length of animation so it changes while items are invisible, but not much luck there and it would just delay the entire sliding animation instead.Also added a couple more testimonials because it was hard to tell whether both buttons were working with only 2 (just ignore the placeholders).

As usual, any potential advice is highly appreciated :)