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<head>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
svg { width:100%; height: 100% }
</style>
</head>
<body>
<script>
var canvas = d3.select("body")
.append("svg")
.attr("x", 1000)
.attr("y", 1000)
.append("g");
var blue = canvas.append("rect")
.attr("x", 50)
.attr("y", 50)
.attr("height", 300)
.attr("width", 600)
.style("fill", "#33cccc")
var yellowstripe = canvas.append("rect")
.attr("x", 50)
.attr("y", 150)
.attr("height", 100)
.attr("width", 600)
.style("fill", "yellow")
var blacktri = [{"x": 50.0, "y": 50.0},
{"x": 300.0, "y": 150.0},
{"x": 50.0, "y": 300.0}];
var triangle = canvas.append("polygon")
.attr("points", "50, 50 300, 200 50, 350")
.style("stroke-width", 2)
.style("stroke", "black")
.style("fill", "black");
</script>
</body>
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js