.scope {
    position: relative;
    overflow: hidden;
    width: 100%;

    overflow: hidden;
    position: relative;

    background-size: cover;
    background-position: center center;
}
.ratio1x1 { padding: 50% 0; }
.ratio2x1 { padding: 25% 0; }
.ratio3x1 { padding: 16.5% 0; }
.ratio3x2 { padding: 33.33% 0; }

.scope img {
    position: absolute;
    top: 0;
    max-width: inherit !important;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    left: 50%;
    transform: translateX(-50%);
}