Fix overlap of description when the artwork is loading
Fix overlap of description when the artwork is loading

By providing a barrier, we can ensure that the description does not overlap the header area.

romannurik/muzei,ianhanniballake/muzei,romannurik/muzei,ianhanniballake/muzei,ianhanniballake/muzei,romannurik/muzei,romannurik/muzei,ianhanniballake/muzei,romannurik/muzei,ianhanniballake/muzei