.sidebar_overflow {
	overflow-y :scroll;
	margin-right: 12px;

}
.nav_list input[type=checkbox]:checked + label + ul {
	max-height: 520px;
}
.sidebar_overflow::-webkit-scrollbar {
	width: 6px;
	height: 6px;
	background-color: #ccc;
}
.sidebar_overflow::-webkit-scrollbar-track {
    background-color: #ccc;
}
.sidebar_overflow::-webkit-scrollbar-thumb {
    background: #e9ecef;
}