.table {
  display: table;
  height: 100%;
  width: 50%;
  margin-left: auto;
  margin-right: auto;
}

.td {
  display: table-cell;
  text-align: center;
  vertical-align: middle;
  height: 600px;
  border: 1px solid black;
}

img {
  vertical-align: middle;
}