.r1 {
   margin-left: 60px;
}

.r2 {
   margin-left: 325px;
}

.r1 img, .r2 img, .r3 img {
   margin-top: 25px;
}

.r3 {
   margin-left: 48px;
}

#main .r3 img {
   border: 5px solid #000;
}

#main .r3:hover img {
   border: 5px solid #fff;
}