{
const canvas = html`<canvas width = 300 height = 300 style = "border:1px solid black;"/>`
const ctx = canvas.getContext("2d")
ctx.fillStyle = "steelblue"
ctx.strokeStyle = "red"
ctx.beginPath()
ctx.rect(150,150,50,50)
ctx.fill()
ctx.stroke()
ctx.closePath()
return canvas
}