body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: #f9f9f9;
    margin: 0;
    padding: 20px;
  }
  
  h1 {
    margin-bottom: 20px;
  }
  
  .controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
  }
  
  label {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  input[type="range"] {
    width: 300px;
  }
  
  canvas {
    border: 2px solid #333;
    background: #fff;
  }
  
  .buttons {
    display: flex;
    gap: 10px;
  }