* {box-sizing:border-box}

/* Slideshow container / playlist container */
.slideshow-container, .playlist-container {
  max-width: 1280px;
  position: relative;
  margin: auto;
}
.slideselector-container, .playlistselector-container{
  text-align: center;
}

/* Hide the images by default */
.mySlides {
  display: none;
}

/* Next and previous buttons */
.slideshow-container .prev, .slideshow-container .next,
.playlist-container .prev, .playlist-container .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: lightgreen;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
  text-decoration: none;
}

.playlist-container iframe {
    aspect-ratio: 16 / 9;
    height: 100%;
    width: 100%;
}

/* Position the "next button" to the right */
.slideshow-container .next,
.playlist-container .next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.slideshow-container .prev:hover, .slideshow-container .next:hover,
.playlist-container .prev:hover, .playlist-container .next:hover {
  background-color: rgba(0,0,0,0.8);
}

.playlist-description {
    text-align: center;
    font-style: italic;
    padding-bottom: 1.25em;
    width: 75%;
    margin-left: auto;
    margin-right: auto;
}

/* Fading animation */
.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: .5s;
  animation-name: fade;
  animation-duration: .5s;
}

.playlist-container .fade {
  -webkit-animation-name: none;
  animation-name: none;
}

@-webkit-keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}

@keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}

.youtube {
  text-align: center;
  margin: auto;
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.youtube iframe {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  max-height: 90vh;
  max-width: 90vw;
}

.presentation-video-container {
  text-align: center;
  margin: auto;
  position: relative;
  width: 100%;
}

.presentation-video {
  max-width: 100%
}

.script p > em {
    padding-left: 1.5em;
    display: block;
}