body { background-color: lightblue; }
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333333;
  position: sticky;
  top: 0;
}

ul li {
  float: left;
}

ul li a {
  display: block;
  color: white;
  text-align: center;
  padding: 20px 24px;
  text-decoration: none;
}

ul li a:hover {
  background-color: #111111;
}
img {
float: right;
}
}