.nav-menu_mobile {
    height: 100%;
    width: 0;
    position: fixed;
    top: 0;
    right: 0;
    background-color: #111;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
    z-index: 102;
}

.nav-menu_mobile a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

.nav-menu_mobile a:hover, .offcanvas a:focus{
    color: #f1f1f1;
}

.nav-menu_mobile > a:hover {
    color: #ff9300;
}

.nav-menu_mobile .closebtn {
    position: absolute;
    top: 12px;
    right: 11px;
    font-size: 40px;
    margin-left: 50px;
    color: #FF9C30;
}

#main {
    transition: all .5s;
    position: relative;
    left:0;
    z-index: 100;
}

@media screen and (max-height: 450px) {
    .nav-menu_mobile {padding-top: 15px;}
    .nav-menu_mobile a {font-size: 18px;}
}
#overlay {
    transition: all .5s;
    position:absolute;
    top:0;
    bottom:0;
    left: 0;
    right:0;
    background-color:#000;
    opacity:0.7;
    z-index: 101;
    display: none;
    width: 100%;
}