outer text-align center font-size line-height product display inline-b

.outer {
  text-align: center;

  font-size: 0;
  line-height: 0;
}

.product {
  display: inline-block;
  vertical-align: middle;

  font-size: 0.75rem;
  line-height: normal;

  margin: 10px 5px 0 5px;
}