body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f4f4f4;
  }
  .tracking-form {
    background: white;
    padding: 20px;
    max-width: 500px;
    margin: auto;
    border-radius: 8px;
  }
  label {
    display: block;
    margin-top: 10px;
  }
  input, select {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
  }
  button {
    margin-top: 15px;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
  }
  button:hover {
    background: #0056b3;
  }
  .error {
    color: red;
    font-weight: bold;
  }