.topnav {
  	position: -webkit-sticky;
	overflow: hidden;
  	background-color: white;
  	position: sticky;
  	width: 100%;
  	z-index: 10000;
  	top: 0;
}
.topnav a {
	float: left;
  	color: black;
  	text-align:center;
  	padding: 1% 2%;
  	text-decorartion: none;
  	font-size: 17px;
	margin left: 0;
	margin right: 0;
	margin top: 0;
}
.topnav a.active {
	background-color: white;
  	color: gold;
}
.topnav a:hover {
	background-color: grey;
  	color: white;
}