FSE theme.json custom css in Editor + Frontend

In styles-Block einfügen

Bash
"styles": {
  "blocks": {
    "core/heading": {
      "css": "& em { font-family: var(--wp--preset--font-family--utopia); font-style: italic; font-weight: 600; } & strong { font-family: var(--wp--preset--font-family--texta); font-weight: 700; }"
    },
    "core/paragraph": {
				"css": "& strong { font-family: var(--wp--preset--font-family--texta); font-weight: 700; }"
		},
	}
}