wp-calypso/apps/o2-blocks/src/editor-notes/editor.scss

.wp-block-a8c-editor-notes {
	border: 2px solid var(--studio-gray-40);
	position: relative;
	padding: 32px 6px 6px;
	background-color: #c0e7ff;

	.is-selected {
		padding-top: 6px;
	}
}

.editor-notes__editor-indicator {
	position: absolute;
	top: 0;
	left: 8px;
	font-style: italic;
}