body {
    background-image:url('kbc-background.jpg');
    background-position:50%;
    background-size:cover;
    background-repeat:no-repeat;
    height:100%;
}
.wrapper {
    height:99vh;
    margin:auto;
}
.row {
    height:100%;width:50%;
}
.col-md-4 {
    text-align:center;
}
.col-md-4 img {
    width:100%;
}
.col-md-4 img:hover {
    opacity:0.9;
    transition:0.2s;
}

@media only screen and (max-width: 772px) {
    .row {
        width:70%;
    }
}