I am practicing with org->html conversion by trying to export an html
resume.

I have the following

* Resume
** About
   :PROPERTIES:
   :HTML_CONTAINER: header
   :END:
*** George Mauer
    :PROPERTIES:
    :HTML_CONTAINER: h1
    :END:
*** Contact
    :PROPERTIES:
    :HTML_CONTAINER: article
    :HTML_CONTAINER_CLASS: contact
    :END:
**** Location
     :PROPERTIES:
     :HTML_CONTAINER: aside
     :HTML_CONTAINER_CLASS: city-state
     :END:
     New Orleans, LA
**** Email
     :PROPERTIES:
     :HTML_CONTAINER_CLASS: email
     :END:
     [[mailto:gmauer@gmail.com][gmauer@gmail.com]]
**** Blog
     :PROPERTIES:
     :HTML_CONTAINER_CLASS: blog
     :END:
     [[http://georgemauer.net][georgemauer.net]]
**** LinkedIn
     :PROPERTIES:
     :HTML_CONTAINER_CLASS: linkedin
     :END:
     [[https://www.linkedin.com/in/george-mauer/][LinkedIn]]
**** StackOverflow
     :PROPERTIES:
     :HTML_CONTAINER_CLASS: stackoverflow
     :END:
     [[https://stackoverflow.com/users/5056/george-mauer][StackOverflow]]
**** GitHub
     :PROPERTIES:
     :HTML_CONTAINER_CLASS: github
     :END:
     [[https://github.com/togakangaroo/][GitHub]]


And the following .dir-locals.el

((org-mode . ((org-export-with-section-numbers . nil)
              (org-html-html5-fancy . 't)
              (org-export-with-toc . nil)
              (org-html-postamble . nil))))


When I export this to html the HTML_CONTAINER and HTML_CONTAINER_CLASS
properties are working for the Contact and my name and About headers, but
all the headers underneath Contact appear as `ul` with no classes.

It would seem that there's some sort of "level" beyond which heading are
not customizable.

Is that how it works? I'm not finding a variable I can override if it is.