.responsive-16x9 {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9
}


.responsive-4x3 {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
}

@media (max-width: 768px) {
    .sm-fullwidth {
        width: 100% !important;
        height: auto !important;
    }
}