How to implement this slider layout

[andreacontestabile]

Hello everyone,
I need to implement the following design (see attached image):

• Centered slides
• Active slide is bigger
• Equal margins between slides

Everything works fine except the slides don't stay centered (because of the variable height)
Example:
https://codepen.io/seven897/pen/vYvePJY

Given I can't use transform: scale, since all slides can have different widths and ratio, and I want to maintain equal space between slides, what would be the best approach to achieve this layout?

Thank you in advance for your support!