HTML Embed not displaying correctly

I am running into an issue with my HTML Embed forum. After I put the iFrame code in and publish, the form is cut off at the end. The reason I am using this instead of the native forum, is the format is not easy to read on the recipient’s end. She is the administrator of a nursing home. The native form doesn’t lay it out in grid form, like excel. So I found another way to add a form that is easy for her to read. The issue is the apply button is cut off at the end. I’ve added margin and padding to the end of it, but it reverts back to the issue without publishing anything new to the page. Could someone help me with this issue? The link is Thank you.