4 <canvas style=
"position:absolute; top:40px; left:40px" width=
"200" height=
"200"></canvas>
6 var canvas
= document
.querySelector("canvas");
7 var context
= canvas
.getContext("2d");
8 context
.fillStyle
= "red";
9 context
.fillRect(0, 0, 200, 200);