html, body {
  margin: 0;
  padding: 0;
  background-color: black;
  color: white;
  font-family: Verdana, sans-serif;
}

input {
  
}

canvas {
  display: block;
}

div {
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -240px;
  margin-left: -500px;
}