You can now make Mafs look real swanky by pulling in every mathematician's favorite typeface, Computer Modern Serif. It's the same font you'll often see used in LaTeX, and also in 3Blue1Brown videos. It's been used on the Mafs docs site since day one.
To use it, import the Mafs core CSS, and also the font CSS.
@import "mafs/core.css";
@import "mafs/font.css";