.slider{
    z-index: 10;
    width: 100%;
    height: 100%;
    position: absolute;
    background: transparent;
}

.slide{
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    position: absolute;
    width: 100%;
    height: 100%;
    top:0;
    left:0;
}