Hi! I'm using pandoc to generate an HTML file using the following command line:

    pandoc -o doc.html -f markdown -t html -s --toc doc.md

The default style is almost exactly what I had in mind, except for a few additional tweaks. Namely, some CSS settings for dark mode vs light mode. However, when I use `-c my-style.css` the default style no longer gets used. Is there a way to retain or explicitly include the default style in addition to my custom CSS file?