#otp-popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 20px;
    border: 1px solid black;
    box-shadow: 0px 0px 10px gray;
  }
  
  .message {
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
    transition: opacity 0.5s ease-in-out;
  }
  
  .success-message {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
  }
  
  .error-message {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
  }