<!DOCTYPE html>
<html>
<head>
<script type = text/javascript src = https://d3js.org/d3.v4.min.js></script>
</head>
<body>
<div id = svgcontainer></div>
<script>
var width = 300;
var height = 300;
//Create SVG element
var svg = d3.select(#svgcontainer)
.append(svg)
.attr(width, width)
.attr(height, height);
//Create and append rectangle element
svg.append(rect)
.attr(x, 20)
.attr(y, 20)
.attr(width, 200)
.attr(height, 100)
.attr(fill, green);
</script>
</body>
</html>
