.collapsible {
    -webkit-box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
    box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
}
    .collapsible .collection {
        margin: 0;
        border: none;
    }
    .collapsible span.badge {
        margin-top: calc(1.5rem - 11px);
    }

.collapsible {
    border-top: 1px solid #ddd;
    border-right: 1px solid #ddd;
    border-left: 1px solid #ddd;
    margin: 0.5rem 0 1rem 0;
}
.collapsible-header-disable,
.collapsible-header {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    
    -webkit-tap-highlight-color: transparent;
    line-height: 1.5;
    padding: 1rem;
    background-color: #fff;
    border-bottom: 1px solid #ddd;
}
    .collapsible-header.active-item {
        cursor: pointer;
    } 
    .collapsible-header i,
    .collapsible-header span {
        width: 2rem;
        font-size: 1.6rem;
        display: inline-block;
        text-align: center;
        margin-right: 1rem;
    }

.collapsible-body {
    display: none;
    border-bottom: 1px solid #ddd;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    padding: 2rem;
}

.side-nav .collapsible,
.side-nav.fixed .collapsible {
    border: none;
    -webkit-box-shadow: none;
    box-shadow: none;
}

    .side-nav .collapsible li,
    .side-nav.fixed .collapsible li {
        padding: 0;
    }

.side-nav .collapsible-header,
.side-nav.fixed .collapsible-header {
    background-color: transparent;
    border: none;
    line-height: inherit;
    height: inherit;
    padding: 0 16px;
}

    .side-nav .collapsible-header:hover,
    .side-nav.fixed .collapsible-header:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }

    .side-nav .collapsible-header i,
    .side-nav.fixed .collapsible-header i {
        line-height: inherit;
    }

.side-nav .collapsible-body,
.side-nav.fixed .collapsible-body {
    border: 0;
    background-color: #fff;
}

    .side-nav .collapsible-body li a,
    .side-nav.fixed .collapsible-body li a {
        padding: 0 23.5px 0 31px;
    }

.collapsible.popout {
    border: none;
    -webkit-box-shadow: none;
    box-shadow: none;
}

    .collapsible.popout > li {
        -webkit-box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
        box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
        margin: 0 24px;
        -webkit-transition: margin 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        transition: margin 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

        .collapsible.popout > li.active {
            -webkit-box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.18), 0 4px 15px 0 rgba(0, 0, 0, 0.15);
            box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.18), 0 4px 15px 0 rgba(0, 0, 0, 0.15);
            margin: 16px 0;
        }