body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: #f0f0f0;
  }
  
  .header, .footer {
    text-align: center;
    padding: 10px;
    background-color: #4caf50;
    color: white;
  }
  
  .header {
    font-size: 24px;
    font-weight: bold;
  }
  
  .footer {
    font-size: 16px;
  }
  
  .content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #ffffff;
    cursor: pointer;
  }
  
  #dice-image {
    width: 300px;
    height: 300px;
  }