See the standard horizontal navigation pattern for implementation notes.
Adding a tertiary navigation to the horizontal secondary navigation is a two step process:
ux-hnav-has-vertical-tertiary to the nested li (find the one that you want to add the down icon to).ul within the list item for the proper secondary nav item (see source for example).©2015 - Matt Lavallee - Senior UI/UX Designer Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean tincidunt ligula dui, ut sodales tortor. Integer cursus, nisl a aliquet congue, diam metus dapibus risus, eget lacinia sapien est in mauris. Maecenas et neque sed neque tristique commodo id non massa. Aliquam eget egestas neque. Suspendisse mauris nisl, accumsan sit amet ullamcorper sed, tincidunt at justo.