body{
    padding: 0;
    margin: 0;

}
div.main1{
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: row;
    flex-flow: wrap;
}
div.main1>div{
    padding: .5rem;
    flex: 1;
    border-right: 6px solid black;
}
div.main1>div>div>img{
    width: 100%;
    margin-top:.5rem;
}
div.main2{
    display: grid;
    grid-template-columns: repeat(12,1fr);
    grid-template-rows: repeat(12,5vw);
    grid-gap: 15px;
}
.ga-img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
div.main2>div:nth-child(1){
    grid-column: 1/3;
    grid-row: 1/3;
}
div.main2>div:nth-child(2){
    grid-column: 3/6;
    grid-row: 1/3;
}
div.main2>div:nth-child(3){
    grid-column: 6/9;
    grid-row: 1/3;
}
div.main2>div:nth-child(4){
    grid-column: 9/12;
    grid-row: 1/3;
}
div.main2>div:nth-child(5){
    grid-column: 1/6;
    grid-row: 3/6;
}
div.main2>div:nth-child(6){
    grid-column: 6/9;
    grid-row: 3/6;
}
div.main2>div:nth-child(7){
    grid-column: 9/12;
    grid-row: 3/6;
}
div.main2>div:nth-child(8){
    grid-column: 1/3;
    grid-row: 6/9;
}
div.main2>div:nth-child(9){
    grid-column: 3/9;
    grid-row: 6/9;
}
div.main2>div:nth-child(10){
    grid-column: 9/12;
    grid-row: 6/9;
}
div.main2>div:nth-child(11){
    grid-column: 1/3;
    grid-row: 9/12;
}
div.main2>div:nth-child(12){
    grid-column: 3/6;
    grid-row: 9/12;
}
div.main2>div:nth-child(13){
    grid-column: 6/9;
    grid-row: 9/12;
}
div.main2>div:nth-child(14){
    grid-column: 9/12;
    grid-row: 9/12;
}
div.main2>div:nth-child(15){
    grid-column: 1/6;
    grid-row: 12/15;
}
div.main2>div:nth-child(16){
    grid-column: 6/9;
    grid-row: 12/15;
}
div.main2>div:nth-child(17){
    grid-column: 9/12;
    grid-row: 12/15;
}
div.main2>div:nth-child(18){
    grid-column: 1/3;
    grid-row: 15/18;
}
div.main2>div:nth-child(19){
    grid-column: 3/9;
    grid-row: 15/18;
}
div.main2>div:nth-child(20){
    grid-column: 9/12;
    grid-row: 15/18;
}