body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  text-align: center;
  background-color: #000;
  color: #fff;
}

h1 {
  margin: 20px 0;
}

#gameCanvas {
  background-color: #222;
  display: block;
  margin: 0 auto;
  border: 2px solid #fff;
}

#scoreDisplay {
  margin: 10px 0;
  font-size: 1.2em;
}

#statusMessage {
  margin: 5px 0;
  font-size: 1em;
  height: 1.5em;
}

#startButton {
  margin-bottom: 20px;
  padding: 10px 20px;
  font-size: 1em;
  cursor: pointer;
  background-color: #555;
  color: #fff;
  border: 1px solid #fff;
}