svg {
	font: 12px courier;
	shape-rendering: crispEdges;
	background-color: #f7f7f7;
	border-radius: 10px;
}

.peptide{
	font: sans-serif;
}

.backgroudGroup {
	fill: none;
}

.axis path,
.axis line {
	fill: none;
	stroke: steelblue;
}



.d3-tip{
	line-height: 1;
	padding: 10px; 
	border-radius: 2px;
}

.d3-tip.peak-tip:after {
	box-sizing: border-box;
	display: inline;
	font-size: 10px;
	width: 100%;
	line-height: 1;
	content: "\25BC";
	position: absolute;
	text-align: center;
}



.d3-tip.peak-tip.n:after {
  	margin: -1px 0 0 0;
  	top: 100%;
  	left: 0;
}

.d3-tip.peak-tip {
	background: rgba(225, 225, 225, .8);
	color: #f77;
}

.d3-tip.peak-tip:after {
	color: rgba(63, 63, 63, 0.5);
}



.d3-tip.peptide-tip {
	background: rgba(70, 130, 180, .9);
	color: #f77;
}