.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
}