.c7n-image-prop-height {                                    
    background-position: center center;
    background-size: cover;
    display: block;     
    height: 100%;
    width: 100%;            
    position: relative;
}    

.c7n-image-prop-height::after {
    content: " ";
    display: block;
    padding-bottom: 75%;
}