player proto

<!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>
    const margin = {left: 20, top: 20, };
    const width = window.innerWidth;
    const height = 500;
    
    const player_height = 100;
    
    let gholder = d3.select("body")
    	.append("svg")
      .attr("width", 960)
      .attr("height", 500)
    	.append('g')
    	.classed('gholder', true)
    	.attr('transform', `translate(${margin.left}, ${margin.top})`);
    
    let annotation = gholder.append('g')
    	.classed('annotation', true)
    	.attr('transform', `translate(${0}, ${0})`);
    
    let player = gholder.append('g')
    	.classed('player', true)
    	.attr('transform', `translate(${0}, ${height / 2 + 10})`);
    
    annotation.append('rect')
    				.attr('width', (width - margin.left))
    				.attr('height', height/2)
    				.attr('fill', 'green')
    
    player.append('rect')
    				.attr('width', (width - margin.left))
    				.attr('height', height/2)
    				.attr('fill', 'red');

</script>
</body>

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