Add dropdown menus to section

[ramonawalls]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you'd like Each top level menu item (About, Projects, etc.) should have a drop-down menu. Just have to figure out how to do it.

Describe alternatives you've considered Currently you have to click on the page to get to the subpages

Additional context See also issue #43 for breadcrumbs

[dehays]

https://gist.github.com/citrusui/07978f14b11adada364ff901e27c7f61

[ymgan]

Hey,

I just realised that Darwin Core website also has a dropdown menu (see Guides).

If I understand correctly, they configure it in _config.yml, see here like this:

navbar:
  left:
  - text: Terms
    href: terms/
  - text: Guides
    menu:
    - text: Simple Darwin Core
      href: simple/
    - text: Text
      href: text/
    - text: XML
      href: xml/
    - text: RDF
      href: rdf/
  - text: Namespace policy
    href: namespace/
  right:
  - text: GitHub
    href: https://github.com/tdwg/dwc

I hope it's helpful!! Thanks for your hard work!!

[only1chunts]

has to add CSS style within header.html but it works now, I also made it sticky so that the menu is always at the top of the page even when you scroll down.