#sidebar {
    overflow: hidden;
    z-index: 3;
}

    #sidebar .list-group {
        min-width: 400px;
        background-color: #333;
        min-height: 100vh;
    }

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

    #sidebar .list-group-item {
        border-radius: 0;
        font-weight:normal;
        background-color: #222;
        color: #ccc;
        border-left: 0;
        border-right: 0;
        border-color: #2c2c2c;
        width:78%;
        padding-left:40px;
        /*white-space: nowrap;*/
    }

        #sidebar .list-group-item.selected {
            background-color: #ffba00;
            color:#000;
            font-weight:500;
        }
        #sidebar .list-group-item:hover {
            background-color: #111;
            color: #ffba00;
        }
        #sidebar .list-group-item.selected:hover {
            background-color: #ffba00;
            color: #000;
            font-weight: 500;
        }
        /* highlight active menu */
        #sidebar .list-group-item:not(.collapsed) {
            background-color: #222;
        }

    /* closed state */
    #sidebar .list-group .list-group-item[aria-expanded="false"]::after {
        content: " \f0d7";
        font-family: FontAwesome;
        display: inline;
        text-align: right;
        padding-left: 5px;
    }

    /* open state */
    #sidebar .list-group .list-group-item[aria-expanded="true"] {
        background-color: #222;
    }

        #sidebar .list-group .list-group-item[aria-expanded="true"]::after {
            content: " \f0da";
            font-family: FontAwesome;
            display: inline;
            text-align: right;
            padding-left: 5px;
        }

    /* 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: 35px;
        max-width: 40px;
        overflow-y: auto;
        overflow-x: visible;
        transition: all 0.25s 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: 190px;
                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;
                }
}

.collapse.show {
    visibility: visible;
}

.collapsing {
    visibility: visible;
    height: 0;
    -webkit-transition-property: height, visibility;
    transition-property: height, visibility;
    -webkit-transition-timing-function: ease-out;
    transition-timing-function: ease-out;
}

    .collapsing.width {
        -webkit-transition-property: width, visibility;
        transition-property: width, visibility;
        width: 0;
        height: 100%;
        -webkit-transition-timing-function: ease-out;
        transition-timing-function: ease-out;
    }