.buyer-rep .buyer-rep-img {
    position: relative;
    width: 100%;
    max-width: 422px;
    margin: 0 auto;
}
#content .buyer-rep .buyer-rep-img img {
    position: relative;
    width: 100%;
    max-width: 100%;
}
.buyer-rep .buyer-rep-img:after {
    content: '';
    position: absolute;
    background: rgba(0,0,0,0.5);
    width: 100%;
    height: 100%;
    z-index: 99;
    top: 0;
    left: 0;
    opacity: 0;
}

.buyer-rep .buyer-rep-img:hover:after {
    opacity:1;
}