.container {
  display: flex;
  flex-flow: row wrap;
  align-content: space-between;
  justify-content: space-around;
}
.item {
  display: contents;
}
.item > div {
  width: 100px;
  height: 100px;
  border: 1px solid black;
  font-size: 30px;
  line-height: 100px;
  text-align: center;
  margin: 10px;
}
.item:nth-child(3n) > div {
  background: silver;
}
.item:nth-child(3n)::after {
  content: '';
  width: 100%;
  height: 50px;
}
@media screen and (min-width: 768px) {
    .neighbourhood-img img {display:none;}
}

@media screen and (max-width: 767px) {
    .item > div {
      width: 75px;
      height: 50px;
      border: 1px solid black;
      font-size: 20px;
      line-height: 50px;
      text-align: center;
      margin: 10px;
    }

}