* {
padding: 0;
}
#main_nav ul {
	float: left;
	-webkit-transition: .5s;
	transition: .5s;
}
#main_nav li {
	float: left;
	position: relative;
	list-style: none;		
	-webkit-transition: .5s;
	transition: .5s;
}
#main_nav > ul > li > a {
	text-transform: none;
	font-face: Tahoma;
	font-size: 18px;
	font-weight: bold;
	color: #FFFFFF;
	background:#000000 ;
	text-align: center;
}
#main_nav a {
	display: block;
	text-decoration: none;
	padding: 10px 27px;
	font-face: Tahoma;
	font-size: 15px;
	font-weight: bold;
	color: #6B6B6B;
	text-align: left;	
}	
#main_nav a:hover {
	color: #000000;
	background: #6B6B6B;
}
#main_nav ul ul {
	position: absolute;
	left: 0;
	top: 100%;
	visibility: hidden;
	opacity: 0;
	border-left: 1px #6B6B6B solid; 
	border-right: 1px #6B6B6B solid;
	border-top: 1px #6B6B6B solid;
}		
#main_nav ul ul > li {
	border-bottom: 1px #6B6B6B solid;
}
#main_nav ul ul li > a:hover {
	color: #000000;
	background: #6B6B6B;
	font-weight: bold;
}
#main_nav ul ul ul {
	left: 100%;
	top: 0;
}               
#main_nav ul ul ul > li {
	border-bottom: 1px #6B6B6B solid;
}
	
#main_nav li:hover, #main_nav li:hover li {
	background: #161616;

}
#main_nav li:hover > ul {
	visibility: visible;
	opacity: 1;
}