Firefox display issue

Hi,

We are using this plugin on a site we have developed https://www.marinasguide.com.au.

Only in firefox we are experiencing an issue where some of the ads are breaking the sidebar and are appearing next to each other. CSS properties don’t seem to fix the problem.

Any assistance is appreciated.

Thank-you

https://www.ads-software.com/plugins/ads-by-datafeedrcom/