body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f0f0f0;
  background: #111;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
header {
  background: #333;
  color: #fff;
  padding: 10px 0;
}
nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav ul li {
  margin: 0 15px;
}
nav ul li a {
  color: #fff;
  text-decoration: none;
}
nav ul li a.active {
  font-weight: bold;
  text-decoration: underline;
}
.flipbook-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 20px auto;
  width: 90%;
  max-width: 1000px;
}
#flipbook {
  width: 100%;
  height: 80vh;
  background: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}
.controls {
  margin-top: 10px;
}
.controls button {
  margin: 0 10px;
  padding: 5px 10px;
  font-size: 18px;
}
@media (max-width: 768px) {
  #flipbook {
    height: 70vh;
  }
}


.slideshow-container {
  position: relative;
  max-width: 80%;
  height: auto;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.slide {
  display: none;
  position: absolute;
  width: 100%;
            height: 100%;
            object-fit: contain;
            transition: transform 0.4s ease-in-out;
            cursor: pointer;
}

.slide img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  animation: fade 1s ease-in-out;
}

@keyframes fade {
  from {opacity: 0.4}
  to {opacity: 1}
}