<!DOCTYPE html>
<html>
  <h1>Rastreamento de Pedido</h1>
  
  <form id="tracking-form" action="https://www2.correios.com.br/sistemas/rastreamento/ctrl/ctrlRastreamento.cfm" method="post">
    <input type="text" name="objetos" placeholder="Digite o código de rastreamento" required>
    <button type="submit">Rastrear</button>
  </form>
</body>
</html>