#menu {
	position: fixed;
	left: 0px;
	top: 0px;
	right: 0px;
	height: 50px;
	background-color: rgba(255, 255, 255, 1);
	display: flex;
	justify-content: center;
}

.menu_block {
	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
}

.sub_menu_block {
	display: none;
	position: fixed;
	flex-direction: column;
	flex-wrap: nowrap;
	background-color: rgba(255, 255, 255, 1);
}

.menu_item, .sub_menu_item {
	text-decoration: none;
	font-family: 'Open Sans', sans-serif;
	font-size: 15px;
	font-weight: 500;
	color: #505050;
	text-shadow: 1px 1px 0px rgba(255, 255, 255, 0.3);
	padding: 15px;
	cursor: pointer;
}

.menu_item:hover, .sub_menu_item:hover {
	background-color: rgba(50, 220, 255, 0.9);
}