body {
      font-family: Arial, sans-serif;
      background-color: #f4f4f4;
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
    }

    .payment-container {
      background-color: #fff;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      padding: 20px;
      border-radius: 8px;
      width: 300px;
      text-align: center;
    }

    .upi-logo-container {
      width: 80px;
      height: 80px;
      margin: 0 auto;
      margin-bottom: 20px;
    }

    .upi-logo {
      width: 100%;
      height: 100%;
    }

    .payment-form {
      margin-top: 20px;
    }

    .input-field {
      width: 100%;
      padding: 10px;
      margin: 10px 0;
      box-sizing: border-box;
      border: 1px solid #ccc;
      border-radius: 4px;
    }

    .error-message {
      color: #ff0000;
      margin-top: 5px;
    }

    .submit-button {
      background-color: #4caf50;
      color: #fff;
      padding: 10px 20px;
      border: none;
      border-radius: 4px;
      cursor: pointer;
    }