#ocm-hamburger {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 30px;
    height: 22px;
    cursor: pointer;
    z-index: 9999;
}
#ocm-hamburger span {
    display: block;
    height: 3px;
    background: #000;
    margin: 5px 0;
    transition: 0.4s;
}
#ocm-hamburger.active span:nth-child(1){
    transform: rotate(45deg) translate(5px,5px);
}
#ocm-hamburger.active span:nth-child(2){
    opacity: 0;
}
#ocm-hamburger.active span:nth-child(3){
    transform: rotate(-45deg) translate(6px,-6px);
}

#ocm-sidebar {
    position: fixed;
    top: 0;
    left: -400px;
    height: 100%;
    transition: 0.4s ease;
    z-index: 9998;
    padding-top: 80px;
    overflow-y: auto;
}
#ocm-sidebar.active {
    left: 0;
}

.ocm-menu {
    list-style: none;
    padding: 0 20px;
}
.ocm-menu li {
    padding: 12px 0;
    position: relative;
}
.ocm-menu li ul {
    display: none;
    padding-left: 15px;
}
.ocm-menu li.open > ul {
    display: block;
}
.ocm-menu a {
    text-decoration: none;
    display: block;
}

#ocm-overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    top: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
    z-index: 9997;
}
#ocm-overlay.active {
    opacity: 1;
    visibility: visible;
}