#nav a{
					text-decoration: none;
					background-color: #999999;
					color: white;
					width: 200px;
					display: block;
					float: left;
					text-align: center;
					padding-top: 5px;
					padding-bottom: 5px;
					font-size: 20px;

				}

				#nav{
					width: 600px;
					margin-left: auto;
					margin-right: auto;
				}

				#nav a:hover{
					background-color: gray
				}

				#nav.active{
					border-bottom: 3px;
					border-color: black;
					border-style: solid;
				}