esize: vertical;
  }

  .feedback-form h3 {
    margin-top: 32px;
  }

  button.submit-button {
    background-color: #4a6cf7;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
  }

  button.submit-button:hover {
    background-color: #3a5ce6;
  }
  </style>
</head>
<body>
  <header>
    <h1>Product catalog</h1>
    <p>Click on any item to view details in a side panel</p>
  </header>

  <div cl