.nav-bar-nav > li > a > .glyphicon {
    top: 9px;
}

@keyframes rotating {
    from {
        -ms-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -webkit-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to {
        -ms-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

.filter-bar button.refresh:hover .glyphicon.refresh {
    -webkit-animation: rotating 1s linear infinite;;
    -o-animation: rotating 1s linear infinite;;
    animation: rotating 1s linear infinite;;
}