raw directive not correctly rendering

[davidfrantz]

Hi @schettino72 ,

I love your beautiful theme for Sphinx, and currently use this to prepare a lecture for my students. However, I have now encountered an issue when including an HTML element through the raw directive.

I am trying to include an HTML Export from draw.io:

.. raw:: html
   :file: ../images/test.drawio.html

The result is that the resulting site is completely blank. If I change the theme to ReadTheDocs, the content renders as expected.
Is this related to some missing configuration options (please find conf.py attached)?
conf.zip

Best,
David