body {
  background-image: url('background.png');
  background-repeat: repeat-x;
  background-size: auto 100%; /* Cover the height and repeat horizontally */
  background-position: bottom; /* Start from the bottom */
  background-color: #f0f0f0; /* Fallback color */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

h1 {
  margin-bottom: 20px;
}

canvas {
  background-color: #fff;
  border: 1px solid #000;
}