simple testimonial slider in html, css and Js

What are you most proud of, and what would you do differently next time?

The project was not very tough for the design perspective but the slider-buttons took the most of my time to adjustment. They use to remain stable for Desktop screen sizes but could not be controlled for smaller screen less than 760px. Anyhow I have to use a lot of media queries for this purpose. I did not enjoy this part of my code! I would like to read on this to know how it can be better solved in pure-css or in any other css-framework. Moreover I enjoyed the Js part of the project.

What challenges did you encounter, and how did you overcome them?

The slider-buttons took the most of my time to adjustment. They use to remain stable for Desktop screen sizes but could not be controlled for smaller screen less than 760px. Anyhow I have to use a lot of media queries for this purpose. I did not enjoy this part of my code!

What specific areas of your project would you like help with?

The slider-buttons adjustment for small screen sizes