body {
  font-family: Arial, sans-serif;
}

.gallery {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.album {
  background-color: #f1f1f1;
  padding: 10px;
  margin: 10px;
  cursor: pointer;
  width: 80%;
  text-align: center;
}

.album-preview {
  display: flex;
  justify-content: center;
}

.album-preview img {
  max-width: 50px;
  margin: 5px;
}

.lightbox {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.9);
}

.lightbox-content {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.lightbox-content img {
  max-width: 80%;
  max-height: 80%;
}

.close {
  position: absolute;
  top: 20px;
  right: 35px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
}

.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -22px;
  color: white;
  font-weight: bold;
  font-size: 20px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

.prev {
  left: 0;
  border-radius: 3px 3px 0 0;
}