body {
	margin:0;
}

.topnav {
  overflow: hidden;
  background-color: #333;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
}

/* Style the topnav links */
.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

/* Change color on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}