/* Suprise */
img {
    -moz-transition: all 1s ease;
    -webkit-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
}
img:hover {
    -moz-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
    -o-transform: rotate(180deg);
    transform: rotate(90deg);
}