.ie-slide-contain {
    background-repeat: no-repeat;
    background-position: 50% 50%;
    background-size: contain;
}
.ie-slide-cover {
    background-repeat: no-repeat;
    background-position: 50% 50%;
    background-size: cover;
}
.ie-slide-contain img,
.ie-slide-cover img {
    display: none;
}