/*body:afer {
  margin: 0;
  background: url("01.jpg") no-repeat center center fixed;
  background-size: 100%;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  height: 100vh;
  background-blend-mode: darken;
  transition: 0.5s;
}*/

.slideshow { 
    position: fixed;
    /*width: 100%;
    height: 100%;*/
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    z-index: -1; 
    transition: 0.5s;
    background-blend-mode: darken;
    /*background-image: url("01.jpg");*/
    background = url("01.jpg") no-repeat center center fixed;
    -webkit-background-size: cover;
  	-moz-background-size: cover;
  	-o-background-size: cover;
  	background-size: cover;
  	background-position: center;
}
/*.cb-slideshow:after { 
    content: '';
}
.cb-slideshow li span { 
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
    color: transparent;
    background-size: cover;
    -webkit-background-size: cover;
  	-moz-background-size: cover;
  	-o-background-size: cover;
    background-position: 50% 50%;
    background-repeat: none;
    opacity: 0;
    z-index: -1;
}*/