* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100vh;
  background: #aea594;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  width: 100px;
  height: 100px;
  cursor: pointer;
}