#sidebar {
    overflow: hidden;
    z-index: 3;
    position: fixed;
    height: 100%;
    width: 250px;
    padding-left: 0px;
}
#sidebar .list-group {
    min-width: 400px;
    min-height: 100vh;
}

/* .sidebar-dark */
#sidebar .list-group {
    background-color: #333741;
}

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

#sidebar .list-group-item {
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    white-space: nowrap;
}

/* sidebar-dark */
#sidebar .list-group-item {
    background-color: #333741;
    color: #ccc;
    border-color: #2c2c2c;
}

#sidebar .list-group-item.disabled {
    background-color: grey;
}

/* highlight active menu */
/* sidebar-dark */
#sidebar .list-group-item:not(.collapsed):not(.disabled) {
    background-color: #222;
}

/* closed state */
#sidebar .list-group .list-group-item[aria-expanded="false"]::after {
  content: " \2304";
  font-size: 2.0;
  display: inline;
  text-align: right;
  padding-left: 5px;
}

/* open state */
/* sidebar-dark */
#sidebar .list-group .list-group-item[aria-expanded="true"] {
  background-color: #222;
}
#sidebar .list-group .list-group-item[aria-expanded="true"]::after {
  content: " \203A";
  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;
}

h1.sidebar {
  color: rgb(204, 204, 204);
  display: inline;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-size: 13px;
  font-weight: bold;
  line-height: 24px;
  margin: 10px;
}

#sidebar a.sidebar-item {
  background-color: #333741;
  color: #ccc;
  border-color: #2c2c2c;
  white-space: nowrap;
  max-width: 200px;
  display: block;
  text-overflow: ellipsis;
  overflow:hidden;
}

#sidebar a.indent1 {
  margin-left: 20px;
}

@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;
    }

    #tabControl {
        margin-left: 25px;
    }
    
    #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;
}

/* for indenting the sub menus in the sidebar nar */
.icon-invisible {
    visibility: hidden;
}