Hello, @Amardass,
When I check your site I found that there is a CSS code that is set to show the border for the product image and gallery: https://postimg.cc/GHwSsXRz
Now, In order to solve your issue simply go to the Dashboard,>> XStore >> Theme Options >> Theme custom CSS >> Global CSS and then paste the below code at the bottom of the CSS box.
@media (min-width: 993px){
.woocommerce-product-gallery.images-wrapper{
border: 0 !important;
}
}
Then save settings and check back to your site after clearing the browser cache. The result will appear as you see in the image: https://postimg.cc/F1mTr7Vn
Regards 8Themes Team.