Problem with images

I’m having a bit of trouble trying to get an image to show up in internet explorer, but yet it is showing up just fine in Firefox and Chrome.

The site link is: https://www.ggphysicaltherapy.com

If you notice in the tab content on the right (in firefox, chrome, etc.) the two first tabs show up just fine. The first one is in a div background state, and the second is in just a regular img src code. I was just seeing if doing it different would help, but still made no difference. Anyhow, if you open the site up in IE, you’ll notice that neither image shows up, the first one is just a big blank tab box (due to the width and height being set for the background of the div) and the second tab just shows the old square with a red x. I’m sure it has something to do with the coding of the tabs, but am not sure what it is. Does anyone have an idea of what it could be?