table.fraction{ 
	margin-top: 0px; 
	display: inline; 
	margin-bottom: 0px; 
	vertical-align: middle; 
	text-align: center; 
}
table.sqrt{ 
	margin-top: 0px; 
	display: inline; 
	margin-bottom: 0px; 
	vertical-align: middle; 
	text-align: center; 
}
table.mix{ 
	margin-top: 0px; 
	display: inline; 
	margin-bottom: 0px; 
	vertical-align: middle; 
	text-align: center; 
}