#instagram-feed{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin:0 auto;
  padding:0;
  line-height:0;
  max-width:1200px;
}

#instagram-feed a{
  display:block;
  overflow:hidden;
  aspect-ratio:3/4;
}

#instagram-feed img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  vertical-align:bottom;
  transition:transform .3s ease;
}

#instagram-feed a:hover img{
  transform:scale(1.05);
}

/* tablet */
@media screen and (max-width:768px){

  #instagram-feed{
    grid-template-columns:repeat(3,1fr);
  }

}

/* smartphone */
@media screen and (max-width:480px){

  #instagram-feed{
    grid-template-columns:repeat(3,1fr);
  }

}