<!DOCTYPE HTML>
<html>
<body>
<div style="-moz-transform:translate(0.4px); position:absolute; top:0px;">
  <canvas style="margin-left:0.4px; border:1px solid black; display:block" width="10" height="10" id="c"></canvas>
</div>
<div style="position:absolute; top:0px; width:12px; height:12px; background:black;"></div>
<script>
var c = document.getElementById("c");
var ctx = c.getContext('2d');
ctx.fillStyle = "black";
ctx.fillRect(0, 0, c.width, c.height);
</script>
</body>
</html>