Graphene Header Messed Up

Try using Firefox with the Firebug add-on for this kind of CSS work.
https://getfirebug.com/

May be related to many mark-up errors:

https://validator.w3.org/check?uri=http%3A%2F%2Fwww.videocrank.net%2F&charset=%28detect+automatically%29&doctype=Inline&group=0

How do I go about fixing the problem?

See Validating Your Site

I made some adjustments to my site and the header appears back in place. Can anyone else confirm this? Thank you.

You just need to clear your browser cache (CTRL+F5) is all.