body {
  font-family: Georgia, serif;
  margin: 40px;
  background-color: #f4f4f4;
}


.tabla {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  background: white;
  padding: 20px;
}

/* CELDAS SIN BORDES */
.tabla td {
  vertical-align: top;
  padding: 20px;

  border: none; /* invisible total */
}

/* TEXTO */
h1 {
  text-align: center;
  margin-bottom: 20px;
}