popup overlapping the related product section.

[z-bug]

Hi,

I've created a popup for product details but the popup is overlapping the images of the related products section and footer. If I give the section z-index negative its no longer clickable. can anyone help me with this? 

Following is the website url.

https://collectorscage.com/products/balenciaga-green-handbag-bgh1640327

[Opeyemi_pro]

Kindly indicate with an image the issues you're having with the pop up form 

[z-bug]

here you can see.

[Opeyemi_pro]

Where did you design the pop up form did you use Shopify or other third party platform?

[z-bug]

As i mentioned its custom coded.