.flex {
  align-items: flex-start;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin: 0 auto;
  width: 1200px;
}

.flex.threeCol .itemBox {
  margin-bottom: 20px;
  width: 32%;
}

@media screen and (max-width: 1024px) {
  .flex.threeCol .itemBox {
    margin-bottom: 20px;
    width: 32%;
  }
}

.flex.threeCol .itemBox img {
  width: 100%;
}


@media screen and (max-width: 767px) {
  .flex {
    display: block;
    width: auto;
  }

  .flex.threeCol .itemBox {
    height: auto;
    margin: 0 auto 10vw;
    width: 80%;
  }
}