Grav's Flavor Of Markdown?

Grav does not appear to have a flavor of Markdown that can handle an image reference with classes like this:

![Aperture Icon](/assets/img/blog/apps/aperture.png){.image-right .image-25}

Or did I miss a configuration parameter somewhere?

Yep. I missed a configuration. There should be markdown_extra: true in system.yaml.

Yup or you can enable it per page in the page headers if you prefer.

I did it that way ![Aperture Icon](/assets/img/blog/apps/aperture.png class="image-right image-25") which looks ugly when I see how it should be done :-S