.insights-tooltip {  
  font-family: "proxima-nova",sans-serif;
  padding: 12px;
  color:#FFF; 
  font-size:13px; 
  background-color:#757575; 
  border-radius:5px;  
  -moz-border-radius:5px;  
  -webkit-border-radius:5px; 
  box-shadow:0 1px 2px rgba(0,0,0,.65),0 -1px 2px rgba(0,0,0,.65) inset; 
  text-shadow:0 1px 1px rgba(0,0,0,.8); 
}

.insights-graph .link {
  fill: none;
  stroke: #666;
}

.insights-graph .node circle {
  fill: #ccc;
  stroke: #fff;
  stroke-width: 1.5px;
  cursor:pointer;
}

.insights-graph text {
  fill: #444;
  font: 9px sans-serif;
  pointer-events: none;
  text-shadow: -1px 0px 3px white, -1px 0px 9px white;
}