img.vert-move {
    -webkit-animation: mover 1s infinite  alternate;
    animation: mover 1s infinite  alternate;
}
img.vert-move {
    -webkit-animation: mover 1s infinite  alternate;
    animation: mover 1s infinite  alternate;
}
@-webkit-keyframes mover {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}
@keyframes mover {
    0% { transform: translateY(0); }
    100% { transform: translateY( 50px); }
}