d takes on optimal LaTeX fonts. I use <a href="https://www.ctan.org/tex-archive/fonts/cochineal" class="external-link">Cochineal</a> as the main font and <a href="https://www.ctan.org/tex-archive/fonts/fira" class="external-link">Fira</a> for the sans and mono fonts. You may need to change or comment out <a href="https://github.com/grantmcdermott/lecturenotes/blob/master/inst/rmarkdown/templates/template-name/skeleton/skeleton.Rmd#L33-L35" class="external-link">these lines</a> of the template, depending on 