@media only screen and (max-width: 767px) {
    .page-sidebar ul:after{
        content : ' ';
        clear: both;
        width: 100%;
        display:table;
    }
    .page-sidebar ul li {
        float: left;
        width: 33.3%;
        text-align: center;
        font-size:12px;
    }

    .page-sidebar ul.menu li a{
        padding-left:0;
        padding-right:0;
    }
}