section.galerry{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
  gap:15px;
}  
section.galerry img:first-child {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
}
section.galerry img{
  border-radius:20px;
    width: 100%;
    height: auto;
}

@media screen and (max-width:768px){
section.galerry{
  display:block;
}