.div-img .img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    transform: scale(1);
    -ms-transform: scale(1);
    -moz-transform: scale(1);
    -webkit-transform: scale(1);
    -o-transform: scale(1);
    -webkit-transition: all 500ms ease-in-out;
    -moz-transition: all 500ms ease-in-out;
    -ms-transition: all 500ms ease-in-out;
    -o-transition: all 500ms ease-in-out;
    filter: grayscale(100%);
}
.div-img:hover .img {
    transform: scale(0.8);
    -ms-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -webkit-transform: scale(0.8);
    -o-transform: scale(0.8);
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    filter: grayscale(0%);
}