test overflow

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    var data = ["fromage", "epinards", "chantage", "epinards", "chantage", "epinards", "chantage", "epinards", "chantage", "epinards", "chantage", "epinards", "chantage", "epinards", "chantage"];
    var svg = d3.select("body").append("svg")
    	.attr("width", 960)
    	.attr("height", 500)
    	
    
    var gListCat = svg.append("svg")
      .attr("width", 200)
    	.attr("height", "100%")
    gListCat.append("rect")
    	.style("fill", "red")
        .attr("y", 0)
        .attr("id", "catList")
        .attr("x", 0)
    		.attr("width", 200)
      	.attr("height", "100%")
    gListCat.selectAll("text").data(data).enter().append("text")
    	.text(function(d){return d})
    	.attr("x", 20)
    	.attr("y", function(d, i){return (1+i)*50})

</script>
</body>

https://d3js.org/d3.v4.min.js