.sfa-left-ad, .sfa-right-ad {
    position: fixed;
    top: 100px;
    width: 160px;
    height: auto;
    z-index: 9999;
    max-width: 100%;
}

.sfa-left-ad {
    left: 0;
}

.sfa-right-ad {
    right: 0;
}

@media screen and (max-width: 1024px) {
    .sfa-left-ad,
    .sfa-right-ad {
        width: 120px;
    }
}

@media screen and (max-width: 768px) {
    .sfa-left-ad,
    .sfa-right-ad {
        width: 100px;
    }
}

@media screen and (max-width: 600px) {
    .sfa-left-ad,
    .sfa-right-ad {
        display: none;
    }
}