.single-box {
      background-color: #ffffff;
      border: 2px solid #007BFF;
      border-radius: 12px;
      max-width: 600px;
      margin: auto;
      padding: 25px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .single-box h2 {
      text-align: center;
      color: #007BFF;
      margin-bottom: 20px;
    }

    .charge-row {
      display: flex;
      justify-content: space-between;
      margin: 15px 0;
      font-size: 18px;
    }

    .charge-row span.label {
      font-weight: bold;
      color: #333;
    }

    .details {
      margin-top: 20px;
      font-size: 15px;
      color: #555;
      line-height: 1.6;
    }

    @media (max-width: 500px) {
      .charge-row {
        flex-direction: column;
        align-items: flex-start;
      }
    }