View source for Template:Note/styles.css

.note {
	background-position: left 7px top 50%;
	padding: 0.5em 0.5em 0.5em 40px;
	margin: 0.5em 0;
	overflow: hidden;
	background-color: #f8f9fa;
	background-repeat: no-repeat;
	border-left: 4px solid #ddd;
	border-radius: 4px;
}
.note-inline {
	display: inline-block;
	vertical-align: middle;
}
.note-info {
	background-color: #f6efe5;
	/* [[File:OOjs_UI_icon_reference_20_ac6600.svg]] */
	background-image: url(https://upload.wikimedia.org/wikipedia/commons/d/d5/OOjs_UI_icon_reference_20_ac6600.svg);
	background-size: 25px;
	border-color: #ac6600;
	padding-left: 40px;
	min-height: 28px;
}
.note-reminder {
	background-color: #fff9ea;
	/* [[File:OOjs_UI_icon_lightbulb-yellow.svg]] */
	background-image: url(https://upload.wikimedia.org/wikipedia/commons/a/a8/OOjs_UI_icon_lightbulb-yellow.svg);
	background-size: 25px;
	border-color: #fc3;
	min-height: 28px;
}
.note-warn {
	background-color: #fff9ea;
	/* [[File:OOjs_UI_icon_alert-warning.svg]] */
	background-image: url(https://upload.wikimedia.org/wikipedia/commons/3/3b/OOjs_UI_icon_alert-warning.svg);
	background-size: 25px;
	border-color: #fc3;
	min-height: 28px;
}

.note-error {
	background-color: #fee7e6;
	/* [[File:OOjs_UI_icon_notice-destructive.svg]] */
	background-image: url(https://upload.wikimedia.org/wikipedia/commons/b/bf/OOjs_UI_icon_notice-destructive.svg);
	background-size: 25px;
	border-color: #c33;
	min-height: 28px;
}