{
      box-sizing: border-box;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: Arial, sans-serif;
    }

    /* Popup Styles */
    .popup {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 90%;
      max-width: 400px;
      padding: 40px;
      background-color: #fff;
      text-align: center;
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
      font-size: 16px;
      animation: popup-fade-in 0.5s ease-out;
         z-index: 9999; /* Added z-index */
    }

    @keyframes popup-fade-in {
      0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
      100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    }

    .popup-image {
      max-width: 100%;
      height: auto;
      margin-bottom: 20px;
      border-radius: 10px;
    }

    /* Sign Up Form Styles */
    .signup-form {
      margin-top: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .signup-form .email-container {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
    }

    .signup-form input[type="email"] {
      flex: 1 1 200px;
      padding: 10px;
      margin: 10px;
      border: 1px solid #ccc;
      border-radius: 5px;
    }

    .signup-form input[type="submit"] {
      padding: 10px 20px;
      background-color: #4CAF50;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }

    .promo-code {
      font-weight: bold;
      margin-top: 20px;
      color: #4CAF50;
    }

    .popup-close {
      position: absolute;
      top: 10px;
      right: 10px;
      font-size: 24px;
      font-weight: bold;
      color: #ccc;
      cursor: pointer;
      transition: color 0.3s;
    }

    .popup-close:hover {
      color: #999;
    }

    /* Responsive Styles */
    @media screen and (max-width: 480px) {
      .popup {
        width: 90%;
        padding: 20px;
      }
    }