.modal {
  display: none; 
  position: fixed;
  z-index: 1050;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.8);
}

.modal-content {
  position: relative;
  margin: auto;
  padding: 0;
  width: 80%;
  max-width: 800px;
}

.slide {
  display: none;
  width: 100%;
  transition: opacity 0.5s ease;
}

.slide.active {
  display: block;
}

.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 2rem;
  font-weight: bold;
  padding: 8px 16px;
  background-color: rgba(0,0,0,0.3);
  border: none;
  border-radius: 5px;
  user-select: none;
}

.prev { left: 0; }
.next { right: 0; }

.close {
  position: absolute;
  top: 15px;
  right: 25px;
  color: white;
  font-size: 35px;
  font-weight: bold;
  cursor: pointer;
  z-index: 10;
}