Template:CircleGroupAvatar/styles.css

.circle {
	border-radius: 50%;
	display: inline-block;
	position: relative;
}

.circle .circle_text {
	text-align: center;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	margin: 0 auto;
	font-size: 200%;
	font-weight: bold;
}