#slideshow {
  margin: 20px auto;
  position: relative;
  width: 100%;
  height: 32vw;
  max-height: 408px;
  border-radius: 10px;
}
@media(max-width:500px){
  #slideshow{
    height: 45vw;
    width: 100%;
  }
}

#slideshow > div {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  box-shadow: 0px 0px 5px 0px black;
}