@media (max-width: 768px) {
    .gray-block {
        margin-bottom: 90px !important;
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .gray-block {
        margin-bottom: 120px !important;
    }
}

@media (min-width: 1024px) and (max-width: 1280px) {
    .gray-block {
        margin-bottom: 60px !important;
    }
}