Slider Structure from Webflow: Seeking Help with Z-Index or Display Issue

Hello everyone, I have come across a slider structure from made in Webflow. I’ve integrated this slider structure into my own project just as it is. However, I believe due to the z-index or some other reason, the background that should be behind is showing up in the front, causing the slider functionality I intended to use to not work. I was going to ask for your assistance with this. Below, I will share the slider structure I found from made in Webflow.

This is a screenshot from my project.

The intended slider