body{
  text-align: center;
  background-color: #3de1ff;
  
}
image{
  width="1000px" height="1000px">
}
header {
  position: sticky;
  top: 0;
  background-color: #7FFFD4;
  padding: 20px;
  font-size: 28px;
  font-weight: bold;
  color: #000000;
}
/* === Main Navigation === */
nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  border: 1px solid #000000;
  background-color: #ffffff;
}

nav ul li {
  position: relative;
  border-left: 1px solid #000000;
}

nav ul li:first-child {
  border-left: none;
}

nav ul li a {
  display: block;
  padding: 14px 30px;
  text-decoration: none;
  color: #000000;
  background-color: #ffffff;
  transition: background-color 0.3s ease;
}

nav ul li a:hover {
  background-color: #f0f0f0;
}

/* === Dropdown Menus === */
nav ul li ul {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 160px;
  border: 1px solid #000000;
  background-color: #ffffff;
  z-index: 1000;
}

nav ul li:hover ul {
  display: block;
}

nav ul li ul li {
  border-top: 1px solid #000000;
}

nav ul li ul li:first-child {
  border-top: none;
}

nav ul li ul li a {
  padding: 12px 16px;
  white-space: nowrap;
}
/* === Headings === */
h1 {
  margin: 0;
  font-size: 100px;
  transition: text-shadow 0.3s ease;
}