.slideshow {
    width: 1170px;
    position:relative; /*Make the slideshow container  position:relative and make the sub elements absolute to position the sub element absolute to the container*/
    height:451px; /*The slide show height*/
    overflow:hidden;
    margin-bottom: 50px;

}
.slideshow div {
    position:absolute;
    left:0;
    z-index:8;
}
.slideshow div img
{
    width:1170px; /*The image slide show width*/
    height:451px; /*The image slide show height*/
    margin: auto;
}
.slideshow div.active {
    z-index:10;
}
.slideshow div.lastactive {
    z-index:9;
}