Difficulty creating a slider for testimonials on my website landing page

I am trying to make a testimonials slider at the bottom of my site (read only link below)

The slider should be based on the one shown in this website: Careers | Management Consulting Jobs | Argon & Co

I am comfortable adjusting the colours and the quotes myself but struggling to duplicate boxes within a slider so they all fall next to each other horizontally

Here is my site Read-Only: Webflow - Connect - Strategy and Transformation Community