.ourteam-gird {
  grid-template-columns: repeat(4, 1fr);
  grid-template-areas:
    "       item1   item2   item3   item4   "
    "       item1   item2   item5   item6   ";
}


@media screen and (max-width: 768px){
 .ourteam-gird {
  grid-template-areas:
    "       item1   item1   item2   item2   "
    "       item3   item3   item4   item4   "
    "       item5   item5   item6   item6   ";
} 
}

@media screen and (max-width: 570px){
 .ourteam-gird {
    grid-template-columns: repeat(1, 1fr);
  grid-template-areas:
    "       item1   "
    "       item2   "
    "       item3   "
    "       item4   "
    "       item5   "
    "       item6   "
} 
}