@media only screen and (max-width: 888px) {
.mm-menu_popup {
    width:325px;
    height:80%;
    min-height:140px;
    max-height:880px;
    position:absolute;
    transition:opacity .4s ease;
    opacity:0;
    box-shadow:1px 3px 10px rgba(0,0,0,.3);
    z-index:2;
    top:64px;
    -webkit-transform:translate(-50%,0px);
    -ms-transform:translate(-50%,0px);
    transform:translate(-50%,0px);
    -webkit-transform:translate3d(-50%,0px,0);
    transform:translate3d(-50%,0px,0);
}
}