body {
    background-color: #616060;
    color: #f8f9fa;
}

.btn-toggle {
    font-weight: 600;
    color: #f8f9fa;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    padding: .25rem .5rem;
    position: relative;
}

.btn-toggle::after {
    content: '\25BC';
    position: absolute;
    right: .75rem;
    transition: transform .3s ease;
}

.btn-toggle.collapsed::after {
    content: '\25B6';
}

.btn-toggle:hover,
.btn-toggle:focus {
    background-color: rgba(255,255,255,.1);
    color: #fff;
    outline: none;
}

.btn-toggle-nav a {
    display: block;
    padding: .1875rem .5rem;
    margin: .125rem 0 .125rem 1.25rem;
    color: #adb5bd;
    text-decoration: none;
    border-radius: .25rem;
}

.btn-toggle-nav a:hover {
    background-color: rgba(255,255,255,.1);
    color: #fff;
}

.searchable-select-menu {
    padding-top: .5rem;
}

.searchable-select-list {
    max-height: 15rem;
    overflow-y: auto;
}

.searchable-select-toggle:empty::before {
    content: '\00a0';
}