It’s simple. If you need to insert a fancybox video (for example, to open the video in fancybox http://www.youtube.com/embed/HsQfOUTKX9Q), then you must use the following html code:

<a href="http://www.youtube.com/embed/HsQfOUTKX9Q" class="iframe"> Video in fancybox </a>

If you need to insert in fancybox html (for example, what would the fancybox opened http://envato.com/), then you must use the following html code:

<a href="http://envato.com/" class="iframe"> envato.com in fancybox </a>

Google update 22.06.2016 requires API keys to be used from now on. For more information please read this post – https://googlegeodevelopers.blogspot.com.by/2016/06/building-for-scale-updates-to-google.html

It’s a Google requirement. You simply need to input an API key for your Site Google Maps widget and it’ll work 100% as desired. To create an API key please navigate to this page – https://developers.google.com/maps/documentation/javascript/get-api-key and press the blue “Get a Key” button and follow the prompts.

EXAMPLE