default-editor-styles.scss

/**
 * Default editor styles.
 *
 * These styles are shown if a theme does not register its own editor style,
 * a theme.json file, or has toggled off "Use theme styles" in preferences.
 */

body {
	font-family: $default-font;
	font-size: 18px;
	line-height: 1.5;
	--wp--style--block-gap: 2em;
}

p {
	line-height: 1.8;
}

.editor-post-title__block {
	margin-top: 2em;
	margin-bottom: 1em;
	font-size: 2.5em;
	font-weight: 800;
}