Internet Explorer issues now, no problem with firefox

We weren’t having any trouble with our blog site at all until recently and then it stopped showing correctly Internet Explorer. Why is that? It shows fine in firefox and in safari on my phone, but it started shifting everything and messing up in IE. What can I do to fix this? Please note, as I said, it worked fine in IE previously…it’s only been recently that it started messing up.

Here is my site https://www.GiorgianniAdoption.com