How do I, as a layout designer, need to prepare sliders?

Question

css

I'm setting up a site and there are sliders, and each slider is different, somehow static, but which one, as I understand it, will change.
Here I have a question:
What are my responsibilities as a layout designer / front-end developer to make a slider, what should I do in the layout and in js so that the team from the back end does not swear?
I wonder how this happens in the team, please tell us.

Answer 1

so that the team from the back end does not swear

Fully implement frontend in accordance with business requirements and backend specification. If they are not there, then you should request them.
If even after the request they are not there, then the processes in the company have not been delivered, if it is possible to dump them, dump them.

Answer 2

The team needs to create and agree on an API for data exchange between the front and back.

Answer 3

Well look. as I did for stretching on vp. - this is if the pictures in the slider

<div style="background-image:url('<?php  код вывода пути картиинки   ?> ')"> </div>

- this is if the image is set as a background