.d-flex {
	display: flex;
}
.justify-center {
	justify-content: center;
}
.text-underline {
	text-decoration: underline;
}

#menu .nav > li > a:active, #menu .nav > li.open > a:active {
	background-color: rgba(0, 0, 0, 0.1);
}
.mt-2 {
	margin-top: 20px;
}