.grid text {
	fill: black;
    opacity: 1.0;
	font-family : arial;
	font-size : 0.8em;
}
.grid .tick {
    stroke: grey;
    stroke-width: 0.5;
    opacity: 0.7;
}

.tooltip {	
	font-family : arial;
	font-size : 0.8em;
	
}