body {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      text-align: center;
      background-color: #f9f9f9;
    }
    h1 {
      color: #333;
    }
    input[type="text"] {
      padding: 10px;
      width: 60%;
      max-width: 300px;
      margin: 10px 0;
      border: 1px solid #ccc;
      border-radius: 4px;
    }
    button {
      padding: 10px 20px;
      margin: 5px;
      background-color: #007bff;
      color: white;
      border: none;
      border-radius: 4px;
      cursor: pointer;
    }
    button:hover {
      background-color: #0056b3;
    }
    #result {
      margin: 20px 0;
      padding: 15px;
      background-color: white;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
      min-height: 50px;
    }
    .ad-container {
      margin: 20px auto;
      max-width: 100%;
    }
    @media (max-width: 600px) {
      input[type="text"] {
        width: 80%;
      }
      button {
        width: 45%;
      }
    }