<!DOCTYPE html>
<html>
<head>
<style>
canvas {
border:1px solid black;
}
</style>
</head>
<body>
<p>A canvas element is displayed like this:</p>
<canvas id="myCanvas">Your browser does not support the HTML5 canvas tag.</canvas>
<script>
let c = document.getElementById("myCanvas");
let ctx = c.getContext("2d");
ctx.fillStyle = "#FF0000";
ctx.fillRect(0, 0, 80, 100);
</script>
<p>Change the default CSS settings to see the effect.</p>
</body>
</html>