.carousel .item {
    width: 100%; /*slider width*/
    max-height: 450px; /*slider height*/
}
.carousel .item img {
    width: 100%; /*img width*/
}
/*add some makeup*/
.carousel .carousel-control {
    background: none;
    border: none;
    /*top: 50%;*/
}
/*full width container*/
@media (max-width: 767px) {
    .block {
        margin-left: -20px;
        margin-right: -20px;
    }
}