When I save, half the content boxes delete themselves & other stuff

Crazy weird stuff is happening.
1. I built a page template and started creating a page. The font colors were wrong, bold, and wouldn’t hold the color selection in the special heading custom color option. So I published. Everything but the top two sections deleted itself.

2. As above, the h2 header font on this page I wanted a dark green. Main style sheet has the default color of #666666 (gray). Advanced styling has strong as a deep burnt orange. In the custom color area of special heading I chose dark green. Everything was gray and the strong was the orange.

3. All the paragraph fonts are displaying as bold and green. They’re defined as normal and gray.

4. Rebuilt the page, saved again, everything but the top two sections deleted itself. Again.