.context {
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.context .col {
  display: flex;
  flex-direction: column-reverse;
  justify-content: center;
}

.context .col .item {
  background-color: transparent;
  border: 1px solid black;
  width: 27px;
  height: 27px;
  text-align: center;
}