.navigation {
  position: absolute;
  top: 40px;
  right: 60px;
  padding: 20px;
  z-index: 1000;
}
.navigation ul {
  list-style: none;
  display: flex;
}
.navigation ul li {
  margin-left: 20px;
}
.navigation ul li a {
  text-decoration: none;
  color: white;
  font-size: 16px;
}
.navigation ul li a:hover {
  text-decoration: underline;
}
.navigation ul li a.active {
  text-decoration: line-through;
}

.sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000; 
    display: flex;
    justify-content: center; 
    background: #000 url(https://i.postimg.cc/hhFD7Nkf/apps-47636-13819498107583324-fb06b53a-4974-4acb-85e6-f6f363f85ab6-edec48d0-ec35-4a1f-8bf5-c455987b4a.png) repeat top center;
  }