<!DOCTYPE html>
<html lang="en-US">
<body>
<canvas id="myCanvas" width="200" height="200" style="border:2px solid;">Your browser does not support canvas tag.
</canvas>
<script>
//Draw rectangle inside square
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.fillStyle = "#248f24";
ctx.fillRect(23, 50, 150, 100);
</script> </body>
</html>