body {
  background-color: #eee;
  font-family: Arial, sans-serif;
}

canvas {
  display: block;
  margin: 0 auto;
  margin: calc(30vh - 150px) auto 0;
  background: #fff;
  border-radius: 3px;
  box-shadow: 0px 0px 3px 2px #ccc;
  cursor: pointer;
}

p {
  text-align: left;
  cursor: pointer;
}