JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://mking.me/html5-node-diagram/diagram.css">
<script src="http://mking.me/html5-node-diagram/models-no-arrowhead-drag.js"></script>
<div id="stage">
</div>

CSS

html {
  height: 100%;
}
body {
  -webkit-user-select: none;
  -moz-user-select: none;
 
  height: 40%;
  margin: 0;
  padding: 0;
  font-family: helvetica, san-serif;
}
.node {
  -webkit-border-radius: 48px;
  -moz-border-radius: 48px;
  border-radius: 48px;
  background: #067195;
  /* background-image: url(DC.jpg); */
  border: 2px solid #FFF;
  box-shadow: 0 0 5px #888;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  -webkit-backface-visibility: hidden;
}
.node h4 {
  color: #067195;
  text-shadow: -1px -1px 0 #ffffff, 1px -1px 0 #ffffff, -1px 1px 0 #ffffff, 1px 1px 0 #ffffff;
  margin: 0;
  padding: 0;
  position: absolute;
  width: 56px;
  left: 8px;
  top: 57px;
  bottom: 0;
  font-size: 12px;
}
.node.animate {
  -webkit-transition: all 0.3s ease-in-out;
  -moz-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
}
.node:hover {
  cursor: pointer;
}
.node.dragging {
  z-index: 99;
}
.segment {
  position: absolute;
  top: 0;
  left: 0;
  background: #bae4b3;
  z-index: 1;
  -webkit-transform-origin: 0 100%;
  -moz-transform-origin: 0 100%;
  -ms-transform-origin: 0 100%;
  transform-origin: 0 100%;
  border: 1px solid white;
  border-right: 0;
  -webkit-backface-visibility: hidden;
}
.segment .endpoint {
  position: absolute;
  top: -9px;
}

#stage{
    
    height: 50%;
    width: 50%;
}

JavaScript

var stage = $('#stage');

var NODE_DIMENSIONS = {
    w: 50,
    h: 50
};

 var NodeA = new Node({
      title: 'NodeA',
      stage: stage,
      w: NODE_DIMENSIONS.w,
      h: NODE_DIMENSIONS.h,
      x: 300,
      y: 200,
      events: {
        click: function() {
          window.console.log(this);
        }
      }
    }).attach();

    var NodeB = new Node({
      title: 'NodeB',
      stage: stage,
      w: NODE_DIMENSIONS.w,
      h: NODE_DIMENSIONS.h,
      x: 100,
      y: 50
    }).attach();

    var NodeC = new Node({
      title: 'NodeC',
      stage: stage,
      w: NODE_DIMENSIONS.w,
      h: NODE_DIMENSIONS.h,
      x: 100,
      y: 300
    }).attach();

    var NodeD= new Node({
      title: 'NodeD',
      stage: stage,
      w: NODE_DIMENSIONS.w,
      h: NODE_DIMENSIONS.h,
      x: 500,
      y: 50
    }).attach();

new Segment({
   
        
      h: 5,
      stage: stage,
      origin: NodeA,
      destination: NodeB
    }).attach();

new Segment({
      h: 5,
      stage: stage,
      origin: NodeA,
      destination: NodeC
    }).attach();

new Segment({
        
      h: 5,
      stage: stage,
      origin: NodeA,
      destination: NodeD
    }).attach();