Home page doesn't appear correctly in Explorer

I am having the same issue with two sites where the home page looks different on Explorer than it does on Safari or Chrome. yogaforthepeacefulcb.com. If you look at the main page, you will see how the testimonial content that should be following the main picture kind of jams up and overlays it as well as slider content overlaying the footer. Looks fine in Chrome, Safari, on tablets and on phones. I tried adjusting the spacer setting in various ways, but if it corrects in on Explorer, it messes it up everywhere else. Ideas?