.slideshow-container {
  position: relative;
  max-width: 800px;
  margin: auto;
}

.slides {
  display: none;
}

.slide {
  width: 100%;
  height: auto;
}

#scanQrBtn {
  background-color: purple;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
}

.modal {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background-color: #fefefe;
  margin: 15% auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}