Collections - specify a fallback or hide empty fields

Hi there,

I am building a simple member directory using collections. Each business has fields like name, phone, logo, website URL, etc.

However, some businesses do not have a logo or website for example.

In the Collections Listing template, I would like to either substitute or hide the logo if no image has been assigned. Similarly, I do not want the link to be active if a website URL is not specified.

Am I missing an option for this, or is it not possible at this time?

The Black Sheep does not have a website or logo assigned:

CMS link:

Thank you for your assistance!