main.css

.wrap{
	/*background: red;*/
	width: 80%;
	margin: 0 auto;
}

nav>ul{
	list-style-type: none;
	display: table;
	width: 100%;
	padding-left: 0px;
}

nav>ul>li{
	text-align: center;
	width: 25%;
	display: table-cell;
}