.overlay{
    position: fixed;
    top:0;
    bottom:0;
    left: 0;
    right: 0;
    background-color: rgba(0,0,0,0.8);
    z-index: 1031;
}
.table{
    display: table;
    width: 100%;
    height: 100%;
}
.table-cell{
    display: table-cell;
    width: 100%;
    height: 100%;
    vertical-align: middle;
}
.menu{
    max-width: 700px;
    margin: 0 auto;
}
.menu a{
    text-decoration: none;
    color: #fff;
}
.overlay{
    transform: translateX(-100%);
    -webkit-transform: translateX(-100%);
    -ms-transform: translateX(-100%);
    -o-transform: translateX(-100%);
    -moz-transform: translateX(-100%);
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -o-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
.display-menu{
    transform: translateX(0);
    -webkit-transform: translateX(0);
    -ms-transform: translateX(0);
    -o-transform: translateX(0);
    -moz-transform: translateX(0);
}
.menu>.close{
    position: absolute;
    top: 30px;
    right: 30px;
    opacity: 1;
}
.menu>.close>img {
    width: 25px;
}
@media screen and (max-width: 768px) {
    .menu{
        text-align: center;
    }
    .menu h3{
        margin-bottom: 25px;
    }

}