body {
    background-color: #333;
    color: #fff;
    font-family: Arial, sans-serif;
  }
  
  .container {
    width: 80%;
    margin: 0 auto;
    text-align: center;
  }
  
  h1 {
    font-size: 3em;
    margin-top: 50px;
    margin-bottom: 30px;
    color: #fff;
  }
  
  .form {
    display: inline-block;
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0px 2px 5px #999;
    text-align: left;
  }
  
  label {
    display: inline-block;
    margin-bottom: 10px;
    color: #333;
  }
  
  input[type="checkbox"], input[type="number"] {
    margin-left: 10px;
  }
  
  button {
    background-color: #fff;
    color: #333;
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    margin-top: 20px;
    cursor: pointer;
  }
  
  button:hover {
    background-color: #ddd;
  }
  
  input[type="text"] {
    display: block;
    margin-top: 20px;
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: none;
    box-shadow: 0px 2px 5px #999;
    text-align: center;
    font-size: 1.5em;
  }