d3.parsets.css

.dimension { cursor: ns-resize; }
.category { cursor: default; }
.dimension tspan.name { font-size: 1.5em; fill: #333; font-weight: bold; }
.dimension tspan.sort { fill: #000; cursor: pointer; opacity: 0; }
.dimension tspan.sort:hover { fill: #333; }
.dimension:hover tspan.name { fill: #000; }
.dimension:hover tspan.sort { opacity: 1; }
.dimension line { stroke: #000; }
.dimension rect { stroke: none; fill-opacity: 0; }
.dimension > rect, .category-background { fill: #fff;}
.dimension > rect { display: none; }
.category:hover rect { fill-opacity: .3; }
.dimension:hover > rect { fill-opacity: .3; }
.ribbon path { stroke-opacity: 0; fill-opacity: .5; }
.ribbon path.active { fill-opacity: .9; }
.ribbon-mouse path { fill-opacity: 0; }

.tooltip {
  background-color: rgba(242, 242, 242, .95);
  pointer-events: none;
  background: #eee;
  box-shadow: 0 0 5px #999999;
  font-size: 12px;
  left: 130px;
  padding: 5px;
  position: absolute;
  text-align: center;
  top: 95px;
}