.h1, .h1 span {
    font-size: 36px !important;
    line-height: 1em !important;
}
@media (min-width: 768px) {
    .h1, .h1 span {
        font-size: 48px !important;
    }
}
@media (min-width: 1024px) {
    .h1, .h1 span {
        font-size: 68px !important;
    }
}