table {
	margin: 0 auto;
}
tr {
	text-align: center;
}
tr.klein td {
	font-size: 80%;
	line-height: 1;
}
tr.groot td {
	font-size: 120%;
	line-height: 1;
}

#extra td {
	background: #fff;
	transition: 1s;
}
#extra td:hover {
	scale: 1.25;
	border: 1px solid #ccc;
	box-shadow: 0 0 10px #888;
	border-radius: 10px;
}