html, body {
    height: 100%;
}

.carousel, .item, .active {
    height: 100%;
}

.carousel-inner {
    height: 100%;
}

.carousel-small {
    height: 70%;
}

.fill {
    width: 100%;
    height: 100%;
    background-position: center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    position: absolute;
}