div.row {
	position: relative;
}

.navbar-dark .navbar-toggler {
	background-color: gray;
}

.navbar-dark li.navbar-toggler {
	background-color: inherit;
	color: #000;
}

nav {
	z-index: 2;
}

nav ul {
	list-style: none;
	margin: 0;
}

nav a {
	display: block;
}

nav a:hover {
	text-decoration: none;
	color: #007bff;
}

nav li.act > a {
	color: #EA3F61;
}

/** Desktop **/
@media (min-width: 641px) {
	nav ul.nav_1 > li {
		float: left;
		position: relative;
	}

	nav ul.nav_1 > li > a {
		padding: 0 10px;
	}

	nav ul.nav_1 > li {
		-webkit-transition: background-color 200ms;
		transition: background-color 200ms;
	}

	nav ul.nav_1 > li.open {
		background-color: #CBCBCB;
	}

	nav ul li > ul {
		visibility: hidden;
		background: #CBCBCB;
		position: absolute;
		left: 0;
		top: 24px;
		opacity: 0;
		width: 150px;
		-webkit-transition: all 200ms;
		transition: all 200ms;
	}

	nav ul li.open > ul {
		opacity: 1;
		visibility: visible;
	}

	nav ul li {
		position:relative;
	}

	nav ul li > ul li a {
		padding: 5px 10px;
	}

	nav .navbar-toggler {
		display: none;
	}

	nav ul.nav_3 {
		left: 100%;
		top: 0;
	}

	nav .back_trigger, nav .item_trigger {
		display:none;
	}
}

/** Mobile **/
@media (max-width: 640px) {
	.page {
		left: 0;
		-webkit-transition: left 200ms;
		transition: left 200ms;
	}

	.page.open {
		left: -120px;
	}

	nav ul.nav_1 > li {
		float: none;
	}

	nav ul.nav_1 li ul {
		display: none;
	}

	nav ul.nav_1 li.open > ul {
		display: block;
	}

	nav {
		position: absolute;
		right: 0;
		top: 0;
		/*left: 0;*/
	}

	nav li a {
		position:relative;
	}

	nav ul.nav_1 {
		position: fixed;
		top: 13px;
		right: -120px;
		/*left: -240px;*/
		border: solid 1px gray;
		padding: 10px;
		border-radius: 4px;
		width: 120px;
		z-index: 1;
		background: #fff;
	}

	nav.open ul.nav_1 {
		right: 0;
		/*left: 0;*/
	}

	nav ul.nav_1 {
		-webkit-transition: all 200ms;
		transition: all 200ms;
	}

	nav .item_trigger {
		position: absolute;
		right: 3px;
		top: 0;
	}
}

/** Background overlay **/
#nav_overlay {
	width: 100%;
	height: 100%;
	background: rgba(51, 51, 51, 0.8);
	position: fixed;
	top: 0;
	left: 0;
	z-index: 1;
	opacity: 0;
	visibility: hidden;
	-webkit-transition: all 500ms;
	transition: all 500ms;
}

#nav_overlay.visible {
	opacity: 1;
	visibility: visible;
}