.sidr{display:block;position:fixed;top:0;height:100%;z-index:999999;width:260px;overflow-x:hidden;overflow-y:auto}.sidr.right{left:auto;right:-260px}.sidr.left{left:-260px;right:auto}
#overlay {
    position: absolute;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: 999998;
    display: none;
    background-color: rgba(0,0,0,0.5);
    transition: .2s ease;
}

.sidr-open #overlay {
    display: block;
}

.sidr-inner {min-height: 100%;background-color: white;}