Pop-Ups are stretched all of a sudden

All of a sudden my pop-ups are stretched - I have not changed a single setting or code.

You can find my pop-ups on two pages - two different pop-ups, both stretched -

http://virtualarts.tv/live-streaming-production-and-tricaster-rental/

or

http://virtualarts.tv/education

Per a similar question by another user

.wdpu-msg-inner .wdpu-image img {
height: auto;
width: auto;
position: relative;
}

but the pop-ups remain stretched.