body {
    margin: 0;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(to bottom, #87CEEB, #4682B4); /* Sky to water gradient */
  }
  
  canvas {
    display: block;
    background: url('path_to_your_background_image.png') repeat-x; /* Optional background */
    background-size: cover;
  }