index.css

@keyframes slideshow-keyframes {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.slideshow-next,
.slideshow-active,
.slideshow-inactive {
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: absolute;
  width: 100%;
  height: 100%;
}

.slideshow-next {
  animation: 1s ease-in 5s slideshow-keyframes;
  animation-fill-mode: both;
  opacity: 0;
  z-index: 1;
}

.slideshow-inactive {
  visibility: hidden;
}

.article-caption > * {
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0;
}

.event-caption {
  object-fit: contain;
  width: 100%;
}

.eyecatcher-caption {
  background: linear-gradient(to bottom, #0008 50%, #0004);
  color: #eee;
  font-weight: bold;
  font-size: 3rem;
  box-sizing: border-box;
  padding: 16px;
  position: relative;
  height: 100%;
  width: 100%;
  z-index: 2;
}