.rotate-icon {
    -moz-transition: all 0.2s linear;
    -webkit-transition: all 0.2s linear;
    transition: all 0.5s linear;
}

.rotate-icon.down {
    -moz-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
}

.rotate-icon.spin {
    -moz-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
    transform: rotate(360deg);
}