@keyframes slideshow {
  0%   {background-image: url('/images/slideshow/01.jpg');}
  15%   {background-image: url('/images/slideshow/01.jpg');}
  20%  {background-image: url('/images/slideshow/02.jpg');}
  35%  {background-image: url('/images/slideshow/02.jpg');}
  40%  {background-image: url('/images/slideshow/03.jpg');}
  55%  {background-image: url('/images/slideshow/03.jpg');}
  60%  {background-image: url('/images/slideshow/04.jpg?v=2');}
  75%  {background-image: url('/images/slideshow/04.jpg?v=2');}
  80%  {background-image: url('/images/slideshow/05.jpg?v=2');}
  95%  {background-image: url('/images/slideshow/05.jpg?v=2');}
}