Edge, IE and Chrome full-width regions are just white

I am having a technical problem with my website sbgseniorlifeconsultants.com. The full-width image regions show up ok in the Upfront editor and in Firefox, however in other browsers like Edge, IE and Chrome those full-width regions are just white. I have tried editing the regions, tweaking the settings etc but unfortunately I just can't seem to get the images to show up. I have granted support access, if you guys could take a look and let me know why this is happening I'd appreciate it.