Z-index bug in webflow or issue with the layout

Hi, Here’s a page where the z-index is causing some issues. I was hoping someone could help me figure it out.

The section below the circular graphic has two images wrapped inside a div. I’ve set the z-index of the image with a pattern so that it’s always in the background. For some reason, it always jumps to the top. I’m not sure what’s causing the issue.

Here’s a screenshot of how it looks on chrome -

Here’s a screenshot of how it’s supposed to look.

Page link - New Home

Read only link - Webflow - eLearningBrothers

Thanks in advance.

Here is my public share link: LINK
(how to access public share link)