/* Settings for all callouts / admonitions: */ .callout { background-color: hsl(220, 16%, 16%); } /* Settings for individual callouts / admonitions: */ .callout[data-callout="important"] { /* same name as in callout to be changed */ --callout-color: 19, 203, 232; /* rgb only */ --callout-icon: "lucide-flame"; /* Use lucide- plus icon name from https://lucide.dev */ }