There are five Generic fall back font-family names:
- serif
- sans-serif
- monospace
- cursive
- fantasy
Mobi format only supports the first three (and has no separate CSS anyway).
Each also can be normal, italic, bold or italic bold.
Oblique is a special decoration, not needing an italic font. Cursive is also unrelated to italic. Note that some letters in an italic font are a different style, depending on font. Oblique simply slants the selected font.
There is a hyphen and no quotes.
Quotes are only used on other fonts that have a space in the name.
Examples
https://www.w3schools.com/Css/css_font_fallbacks.asp
CSS
Code:
body {
font-family: "Courier New", Courier, monospace;
}