JSFiddle - React, Tailwind, and code Playground
HTML
<canvas id="myCanvas" width="200" height="100" style="border:1px solid #000000;">
</canvas>JavaScript
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.fillStyle = "#FF0000";
ctx.fillRect(0,0,50,75);
ctx.fillStyle = "blue";
ctx.fillRect(0,0,20,25);
//ctx.clearRect(0, 0, 20,25);