.grid-content-images{
    max-width: 100vw;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

.item-img{
    width: 100%;
    height: 100%;
    display: block;
}


@media only screen and (max-width: 750px) {
  .grid-content-images{
      display: flex;
    flex-direction: column;
  }
}