#sidebar {
    overflow: hidden;
    z-index: 3;
    -webkit-transition: all 50ms linear;
    transition: all 50ms linear;
}

#sidebar .list-group {
    background-color: #343a40;
    min-height: 40vh;
}

#sidebar i {
    margin-right: 6px;
}

#sidebar .list-group-item {
    border-radius: 0;
    background-color: #343a40;
    color: #ccc;
    border-left: 0;
    border-right: 0;
    border-color: #484e54;
    white-space: nowrap;
}

#sidebar .list-group-item:hover {
    background-color: #484e54;
}


/* open state */
#sidebar .list-group .list-group-item[aria-expanded="true"] {
    background-color: #1e2329;
}


/* level 1*/
#sidebar .list-group .collapse .list-group-item,
#sidebar .list-group .collapsing .list-group-item  {
    padding-left: 20px;
}

/* level 2*/
#sidebar .list-group .collapse > .collapse .list-group-item,
#sidebar .list-group .collapse > .collapsing .list-group-item {
    padding-left: 30px;
}

/* level 3*/
#sidebar .list-group .collapse > .collapse > .collapse .list-group-item {
    padding-left: 40px;
}

@media (max-width:768px) {
    #sidebar {
        min-width: 30px;
        width: 100vw;
        overflow-y: auto;
        overflow-x: visible;
        transition: all 0.000s ease;
        transform: translateX(-45px);
        position: fixed;
    }

    #sidebar.show {
        transform: translateX(0);

    }

    #sidebar::-webkit-scrollbar{ width: 0px; }

    #sidebar, #sidebar .list-group {
        min-width: 35px;
        overflow: visible;
    }
    /* overlay sub levels on small screens */
    #sidebar .list-group .collapse.show, #sidebar .list-group .collapsing {
        position: relative;
        z-index: 1;
        width: 100vw;
        top: 0;
    }
    #sidebar .list-group > .list-group-item {
        text-align: center;
        padding: .75rem .5rem;
    }
    /* hide caret icons of top level when collapsed */
    #sidebar .list-group > .list-group-item[aria-expanded="true"]::after,
    #sidebar .list-group > .list-group-item[aria-expanded="false"]::after {
        display:none;
    }
}