Pinned navigation throws off CSS media query breakpoints
When the lefthand navigation is pinned, the available horizontal space in the header is reduced relative to the viewport and it appears this is not taken into account in the width settings for many navbar elements.
Also if the header title is particularly long, this will happen:
Would it be best to create a separate set of media query breakpoints just for header-pinned-nav
or just use the lowest common denominator and assume for the sake of all calculations that the left hand nav is pinned? The former makes the CSS messy, but the latter would really limit how we use the space in the navbar.