#tab_menu {
	display: flex;
	align-items: center;
	width: 100%;
	padding: 0;
	margin: 0 0 1em;
}
#tab_menu li{
	width: 47.8%;
	padding: 0;
	margin: 0 3px 0 0;
	text-align: center;
	list-style: none;
	background: #90B7B5;
    position: relative; 
    color: #fff;
    font-weight: bold;
    letter-spacing: 2px;
}
#tab_menu li:last-child {
	margin-right: 0;
}

#tab_menu li.selected {
	background: #55908D;
}

#tab_menu li.selected:after {
	content: '';
	position: absolute;
	width: 0;    
	height: 0;
	border-left: 10px solid transparent;
	border-right: 10px solid transparent;
	border-top: 16px solid #55908D;
	display: none;
	bottom: -16px;
	left: 50%;
	transform: translateX(-50%);
}


#tab_menu li.selected, #tab_menu li:hover {
	background: #55908D;
    color: #fff;
    font-weight: bold;
}


#tab_menu li.selected:after, #tab_menu li:hover:after {
	display: block;
    font-weight: bold;
}


#tab_menu li:hover {
	background: #55908D;
}
#tab_menu li a {
	display: block;
	padding: 12px 0 8px;
	color: #fff;
	text-decoration: none;
	font-size: 125%;
}