Simple Voronoi

<!DOCTYPE html>

<html lang="en">
<head>
    <meta charset = "UTF-8">
    <title>D3 Practice</title>
    <link rel="stylesheet" type="text/css" href="style.css">
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.12.0/d3.min.js"></script>
   
    </head>
<body>
     
    <script type="text/javascript">
        var width = 960;
        var height = 500;
        
        var vertices = d3.range(100).map(function(d){ return [Math.random()*width,Math.random()*height];})       
        var voronoi = d3.voronoi().size([width,height]);
        
        // Add SVG and the GROUP elements.
        
        var mySvg = d3.select("body").append("svg")
            .attr("width", "100%").attr("height", "100%");

https://cdnjs.cloudflare.com/ajax/libs/d3/4.12.0/d3.min.js