Untitled

<!DOCTYPE html>
<html>

  <head>
      <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
        rel="stylesheet"
        integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
        crossorigin="anonymous">
  </head>

  <body>
    <form>
        <label for="inputPassword5">Senha</label>
        <input type="password" id="inputPassword5" class="form-control" aria-describedby="passwordHelpBlock">
        <small id="passwordHelpBlock" class="form-text text-muted">
            Sua senha deve ter entre 8 e 20 caracteres, os quais devem ser letras e números, sem espaços, caracteres especiais ou emojis.
        </small>
    </form>
  </body>

</html>