body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

header {
  background-color: #333;
  color: white;
  padding: 10px 0;
  text-align: center;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 10px;
}
/* Varsayılan Gizleme */
.hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Görünür olduğunda animasyon */
.visible {
  opacity: 1;
  transform: translateY(0);
}