.main_nav {
	width: 700px;
	height: 40px;
	margin: auto;
	border-bottom: 1px solid #FF7F00;
	margin-bottom: 10px;
}

.main_nav ul {
	list-style: none;
	margin: 0px;
}

.main_nav li {
	width: 25%;
	height: 100%;
	margin: 0px;
	padding: 10px 0px;
	float: left;
	text-align: center;
}

.main_nav li a {
}