flag of sweden again

<!DOCTYPE html>
<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>
    // Feel free to change or delete any of the code you see!
    var svg = d3.select("body").append("svg")
    svg.append("rect")
      .attr({x: 100, y: 10, width: 50, height: 40})
      .style({ fill: "#1c30b4"})
     svg.append("rect")
      .attr({x: 170, y: 10, width: 90, height: 40})
      .style({ fill: "#1c30b4"})
      svg.append("rect")
      .attr({x: 100, y: 70, width: 50, height: 40})
      .style({ fill: "#1c30b4"})
      svg.append("rect")
      .attr({x: 170, y: 70, width: 90, height: 40})
      .style({ fill: "#1c30b4"})
   svg.append("rect")
      .attr({x: 100, y: 50, width: 160, height: 20})
      .style({ fill: "#e4df52"})   
   svg.append("rect")
      .attr({x: 150, y: 10, width: 20, height: 100})
      .style({ fill: "#e4e05c"})

console.log("you are now rocking with d3", d3);
  </script>
</body>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js