.image-slideshow {
  text-align: center;
  margin: 1em 0;
}
.image-slideshow img {
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
  transition: 0.5s;
}
.image-slideshow button {
  background: #333;
  color: #fff;
  border: none;
  padding: 0.5em 1em;
  cursor: pointer;
  border-radius: 5px;
}