Font attributes. The font-family should list three families:

font-family: monospace, "Lucida Grande", sans-serif;
font-feature-settings: normal;
font-kerning: auto;
font-optical-sizing: auto;
font-palette: normal;
font-size: 16px;
font-stretch: normal;
font-style: normal;
font-synthesis: weight style small-caps;
font-variant-alternates: normal;
font-variant-caps: normal;
font-variant-east-asian: normal;
font-variant-ligatures: normal;
font-variant-numeric: normal;
font-variant-position: normal;
font-weight: 400;