#accordion_menu.nav a, #accordion_menu.nav label {
    display: block;
    padding: .85rem;
    color: #fff;
    background-color: #337ab7;
    box-shadow: inset 0 -1px #1d1d1d;
    -webkit-transition: all .25s ease-in;
    transition: all .25s ease-in;
}

#accordion_menu.nav a:focus, #accordion_menu.nav a:hover, #accordion_menu.nav label:focus, #accordion_menu.nav label:hover {
    color: rgba(255, 255, 255, 0.5);
    background: #3071a8;
}

#accordion_menu.nav label {
    cursor: pointer;
    margin-bottom: 0;
}


/**
 * Styling first level lists items
 */

#accordion_menu .group-list a, #accordion_menu .group-list label {
    padding-right: 2rem;
    background: #5a8ab3;
    box-shadow: inset 0 -1px #373737;
}

#accordion_menu .group-list a:focus, #accordion_menu .group-list a:hover, #accordion_menu .group-list label:focus, #accordion_menu .group-list label:hover { background: #6ca5d6; }

/**
 * Styling second level list items
 */

#accordion_menu .sub-group-list a, #accordion_menu .sub-group-list label {
    padding-right: 4rem;
    background: #7c98b1;
    box-shadow: inset 0 -1px #474747;
}

#accordion_menu .sub-group-list a:focus, #accordion_menu .sub-group-list a:hover, #accordion_menu .sub-group-list label:focus, #accordion_menu .sub-group-list label:hover { background: #92b4d2; }

/**
 * Styling third level list items
 */

#accordion_menu .sub-sub-group-list a, #accordion_menu .sub-sub-group-list label {
    padding-left: 6rem;
    background: #454545;
    box-shadow: inset 0 -1px #575757;
}

#accordion_menu .sub-sub-group-list a:focus, #accordion_menu .sub-sub-group-list a:hover, #accordion_menu .sub-sub-group-list label:focus, #accordion_menu .sub-sub-group-list label:hover { background: #333333; }

/**
 * Hide nested lists
 */

#accordion_menu .group-list, #accordion_menu .sub-group-list, #accordion_menu .sub-sub-group-list {
    height: 100%;
    max-height: 0;
    overflow: hidden;
    -webkit-transition: max-height .5s ease-in-out;
    transition: max-height .5s ease-in-out;
}

#accordion_menu .nav__list input[type=checkbox]:checked + label + ul { /* reset the height when checkbox is checked */
    max-height: 2000px; }

#accordion_menu label > span {
    float: left;
    -webkit-transition: -webkit-transform .65s ease;
    transition: transform .65s ease;
}

#accordion_menu .nav__list input[type=checkbox]:checked + label > span {
    -webkit-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    transform: rotate(90deg);
}

#accordion_menu ul {
    list-style-type: none;
    padding-right: 0;
}

#accordion_menu .fa.fa-angle-right {
    font: normal normal normal 20px/1 FontAwesome !important;
}

#accordion_menu .fa-angle-right:before {
    content: "\f104";
}