Ezoic
"Anchor Ads" are one of the site-wide placeholder types offered by the Ad Tester app. They are a great addition to any site, having all the Anchor ads switched on could increase your EPMV by as much as 70%. Here's an example of what a Mobile Anchor Ad looks like:
Steps to add anchor ads to your site:
If you’re not using anchor ads on your original layout:
In the Ezoic Ads App in the menu of your dashboard, click on the Ad Types and then toggle the ‘Anchor Ads’ for each device from ‘off’ to ‘on’ and click save. That’s it!