.main_block_links{
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.main_block_links_item {
    display: block;
    width: calc(33% - 7px);
    height: 165px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    margin-bottom: 15px;
    margin-right: 15px;
}
.main_block_links_item:nth-child(3n) {
    margin-right: 0;
}

@media screen and (max-width: 1230px){
    .main_block_links_item {
        height: calc(23vw * (9 / 16));
        width: calc(33% - 8px);
    }
}

@media screen and (max-width: 768px){
    .main_block_links_item {
        width: calc(50% - 8px);
        height: calc(35vw * (9 / 16));
    }
    .main_block_links_item:nth-child(3n) {
        margin-right: 15px;
    }
    .main_block_links_item:nth-child(2n){
        margin-right: 0;
    }

}
@media screen and (max-width: 425px){
    .main_block_links_item {
        width: 100%;
        height: calc(70vw * (9 / 16));
    }
    .main_block_links_item{
        margin-right: 0 !important;
    }
}