Generar marcos y pilares a la siguiente tabla <tr> <td> <a href="https://www.youtube.com/">Youtube</a> </td> <td> <a href="https://www.google.com/">Google</a> </td> <td> <a href="https://www.facebook.com/">Facebook</a> </td> <td> <a href="https://www.instagram.com/">Instagram</a> </td> </tr>

.tabla {
      width: 450px;
      height: 350px;
      border: 1px solid #000;
      border-collapse: collapse;
    }

    .table td {
      width: 100px;
      height: 50px;
      border: 1px solid #000;
    }

    .table a {
      text-decoration: none;
      color: #000;
    }