.acbanners-wrapper {
    position: relative;
    width: 100%;
}

.acbanners-iframe {
    display: block;
    width: 100%;
    height: 90px;
    border: 0;
    overflow: hidden;
}

@media (max-width: 959px) {
    .acbanners-iframe {
        height: 190px;
    }
}

@media (max-width: 474px) {
    .acbanners-wrapper {
        padding-bottom: calc(37.85% + 10px);
    }

    .acbanners-iframe {
        position: absolute;
        height: 100%;
    }
}