.d3-tip {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.4;
  padding: 20px;
  pointer-events: none !important;
  color: #203d5d;
  box-shadow: 0 4px 20px 4px rgba(0, 20, 60, 0.1),
    0 4px 80px -8px rgba(0, 20, 60, 0.2);
  background-color: #fff;
  border-radius: 4px;
}

.d3-tip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 10px;
  width: 100%;
  line-height: 1;
  color: #fff;
  position: absolute;
  pointer-events: none;
}

.d3-tip.n:after {
  content: "▼";
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
  text-align: center;
}

.d3-tip.e:after {
  content: "◀";
  margin: -4px 0 0 0;
  top: 50%;
  left: -8px;
}

.d3-tip.s:after {
  content: "▲";
  margin: 0 0 1px 0;
  top: -8px;
  left: 0;
  text-align: center;
}

.d3-tip.w:after {
  content: "▶";
  margin: -4px 0 0 -1px;
  top: 50%;
  left: 100%;
}