body {
  margin: 0;
  background-color: #4da6ff;
  overflow: hidden;
  font-family: sans-serif;
}

#ui {
  position: absolute;
  top: 10px;
  width: 100%;
  text-align: center;
  z-index: 10;
}

#startButton {
  padding: 10px 20px;
  font-size: 18px;
  cursor: pointer;
}

#info {
  margin-top: 10px;
  color: white;
  font-size: 20px;
}

canvas {
  display: block;
  margin: 0 auto;
  border: 4px solid #003366;
  background-color: #87ceeb;
}