JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/plottable.js/1.6.1/plottable.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/plottable.js/1.11.0/plottable.min.js"></script>
<svg id="example"></svg>

CSS

.box {
  background: #eee;
  box-shadow: 0 0 5px #999999;
  color: #333;
  display: block;
  font-size: 12px;
  left: 130px;
  padding: 10px;
  position: absolute;
  text-align: center;
  top: 95px;
  width: 80px;
  z-index: 10;
}

JavaScript

var svg = d3.select('#example'); 

var afterSvg = svg[0].parentNode.insert("div", ":first-child");

console.log(svg[0].parentNode);