You'll have to right click and inspect element on it to open your browsers developer console then try to override the CSS and save those overrides to either your Joomla or CB template. I don't see why you'd want to do this though as there's no reason for the menu to be scrolling the profile page at all times. Example as follows
Code:
@media (max-width: 767px) {
.cb_template .cbCanvasLayoutMain.cbPosCanvasMain .cbPosCanvasMainMiddle .cbTabsMenuNavBar {
position: relative;
margin-top: -71px;
}
.cb_template .cbCanvasLayoutMain.cbPosCanvasMain .cbPosCanvasMainMiddle .cbTabsMenuNavBar .navbar-header {
display: none;
}
.cb_template .cbCanvasLayoutMain.cbPosCanvasMain .cbPosCanvasMainMiddle .cbTabsMenuNavBar .navbar-collapse {
display: block;
}
}
See the below on how to use CSS overrides in CB.
www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy