html,
body{height:100%;}
.carousel{height:50%;padding:0.3em 0 0.3em 0}
.item,
.active,
.carousel-inner{height:100%;}
.fill{width:100%;height:100%;background-position:center;-webkit-background-size:cover;-moz-background-size:cover;background-size:cover;-o-background-size:cover;}