Fix top of preview falling unber oC navigation bar (only tested in oC7). Using a fixed px value rather than em, since the oC7 title and navgation bars are as big as they are, and not variable.
Fix top of preview falling unber oC navigation bar (only tested in oC7).
Using a fixed px value rather than em, since the oC7 title and navgation bars are as big as they are, and not variable.

icewind1991/files_markdown,icewind1991/files_markdown,icewind1991/files_markdown