.cb-slideshow,
.cb-slideshow:after {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
    z-index:-3;
    content: '';

}
.cb-slideshow:after {
    background-color: rgba(0,0,0,.25);
    z-index: -1;
 }
.cb-slideshow li span {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
    color: transparent;
    background-size: cover;
    background-position: 50% 50%;
    background-repeat: none;
    opacity: 0;
    z-index: -2;
    -webkit-backface-visibility: hidden;

}

/* Animation for the slideshow images */
@-webkit-keyframes imageAnimation {
    0% { opacity: 0;
        -webkit-animation-timing-function: ease-in; }
    8% { opacity: 1;
        -webkit-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}
@-moz-keyframes imageAnimation {
    0% { opacity: 0;
        -moz-animation-timing-function: ease-in; }
    8% { opacity: 1;
        -moz-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}
@-o-keyframes imageAnimation {
    0% { opacity: 0;
        -o-animation-timing-function: ease-in; }
    8% { opacity: 1;
        -o-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}
@-ms-keyframes imageAnimation {
    0% { opacity: 0;
        -ms-animation-timing-function: ease-in; }
    8% { opacity: 1;
        -ms-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}
@keyframes imageAnimation {
    0% { opacity: 0;
        animation-timing-function: ease-in; }
    3% { opacity: 1;
        animation-timing-function: ease-out; }
    22% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}
/* Show at least something when animations not supported */
.no-cssanimations .cb-slideshow li span{
    opacity: 1;
}