Musval's Custom Theme can let you configure the style of any place, and you don't need to write CSS. Musval provides a Custom Theme Editor that greatly simplifies the configuration process.

There are many configuration items, and you can upload local font files (supporting .otf .ttf .woff .woff2), and set the basic font, note font, and code block font separately.

The Custom Theme Editor is in the floating window form, which can be dragged, resized, and collapsed/expanded.

Just use it according to your intuition, without learning costs!