Vertical tabs scroll into header

First off, I love this plugin! I spent a lot of time trying to find a plugin that does exactly what I wanted it to. I’m only having one issue.

Is there a way to make the tabbed content fixed? Right now it scrolls into my header when you go down the page.

Thanks for the plugin and the help!

http://www.reactmetalsmanagement.com/test/

http://ww.wp.xz.cn/extend/plugins/wp-ui/