.d3-tip {
  line-height: 1;
  padding: 2px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 2px;
  font-size: 6px;
}

/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 6px;
  width: 100%;
  line-height: 1;
  color: rgba(0, 0, 0, 0.8);
  content: "\25BC";
  position: absolute;
  text-align: center;
}

/* Style northward tooltips differently */
.d3-tip.n:after {
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
}

/* SVG element */
/* Way to add borders in SVG - https://stackoverflow.com/questions/18330344/how-to-add-border-outline-stroke-to-svg-elements-in-css */
.frame {
  fill: none;
  stroke: rgba(255, 255, 255, 0.25);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* Transparency simulates sub pixel border https://stackoverflow.com/questions/13891177/css-border-less-than-1px */

.d3-flame-graph-label:hover {
  border: 1px dotted;
  border-color: rgba(255, 255, 255, 0.75);
}
/* 
.d3-flame-graph-label:hover {
    border: 1px solid;
    border-color: rgba(255, 255, 255, 0.75);
  } */