.carousel {
        position: relative;
    }

        .carousel.pointer-event {
            -ms-touch-action: pan-y;
            touch-action: pan-y;
        }

    .carousel-inner {
        position: relative;
        width: 100%;
        overflow: hidden;
    }

        .carousel-inner::after {
            display: block;
            clear: both;
            content: "";
        }

    .carousel-item {
        position: relative;
        display: none;
        float: left;
        width: 100%;
        margin-right: -100%;
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
        transition: -webkit-transform 0.6s ease-in-out;
        transition: transform 0.6s ease-in-out;
        transition: transform 0.6s ease-in-out, -webkit-transform 0.6s ease-in-out;
    }

    @media (prefers-reduced-motion: reduce) {
        .carousel-item {
            transition: none;
        }
    }

    .carousel-item.active,
    .carousel-item-next,
    .carousel-item-prev {
        display: block;
    }

        .carousel-item-next:not(.carousel-item-left),
        .active.carousel-item-right {
            -webkit-transform: translateX(100%);
            transform: translateX(100%);
        }

        .carousel-item-prev:not(.carousel-item-right),
        .active.carousel-item-left {
            -webkit-transform: translateX(-100%);
            transform: translateX(-100%);
        }

    .carousel-fade .carousel-item {
        opacity: 0;
        transition-property: opacity;
        -webkit-transform: none;
        transform: none;
    }

        .carousel-fade .carousel-item.active,
        .carousel-fade .carousel-item-next.carousel-item-left,
        .carousel-fade .carousel-item-prev.carousel-item-right {
            z-index: 1;
            opacity: 1;
        }

    .carousel-fade .active.carousel-item-left,
    .carousel-fade .active.carousel-item-right {
        z-index: 0;
        opacity: 0;
        transition: opacity 0s 0.6s;
    }

    @media (prefers-reduced-motion: reduce) {
        .carousel-fade .active.carousel-item-left,
        .carousel-fade .active.carousel-item-right {
            transition: none;
        }
    }

    .carousel-control-prev,
    .carousel-control-next {
        position: absolute;
        top: 0;
        bottom: 0;
        z-index: 1;
        display: -ms-flexbox;
        display: flex;
        -ms-flex-align: center;
        align-items: center;
        -ms-flex-pack: center;
        justify-content: center;
        width: 15%;
        color: #fff;
        text-align: center;
        opacity: 0.5;
        transition: opacity 0.15s ease;
    }

    @media (prefers-reduced-motion: reduce) {
        .carousel-control-prev,
        .carousel-control-next {
            transition: none;
        }
    }

    .carousel-control-prev:hover, .carousel-control-prev:focus,
    .carousel-control-next:hover,
    .carousel-control-next:focus {
        color: #fff;
        text-decoration: none;
        outline: 0;
        opacity: 0.9;
    }

    .carousel-control-prev {
        left: 0;
    }

    .carousel-control-next {
        right: 0;
    }

    .carousel-control-prev-icon,
    .carousel-control-next-icon {
        display: inline-block;
        width: 20px;
        height: 20px;
        background: no-repeat 50% / 100% 100%;
    }

    .carousel-control-prev-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M5.25 0l-4 4 4 4 1.5-1.5L4.25 4l2.5-2.5L5.25 0z'/%3e%3c/svg%3e");
    }

    .carousel-control-next-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M2.75 0l-1.5 1.5L3.75 4l-2.5 2.5L2.75 8l4-4-4-4z'/%3e%3c/svg%3e");
    }

    .carousel-indicators {
        position: absolute;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 15;
        display: -ms-flexbox;
        display: flex;
        -ms-flex-pack: center;
        justify-content: center;
        padding-left: 0;
        margin-right: 15%;
        margin-left: 15%;
        list-style: none;
        margin-bottom: 6px !important;
    }

        .carousel-indicators li {
            box-sizing: content-box;
            -ms-flex: 0 1 auto;
            flex: 0 1 auto;
            width: 30px;
            height: 3px;
            margin-right: 3px;
            margin-left: 3px;
            text-indent: -999px;
            cursor: pointer;
            background-color: #fff;
            background-clip: padding-box;
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
            opacity: .5;
            transition: opacity 0.6s ease;
        }

    @media (prefers-reduced-motion: reduce) {
        .carousel-indicators li {
            transition: none;
        }
    }

    .carousel-indicators .active {
        opacity: 1;
    }

    .carousel-caption {
        position: absolute;
        right: 15%;
        bottom: 20px;
        left: 15%;
        z-index: 10;
        padding-top: 20px;
        padding-bottom: 20px;
        color: #fff;
        text-align: center;
    }

    .d-block {
        display: block !important;
    }

    .w-100 {
        width: 100% !important;
    }

    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }
    /* servono per dare un'altezza fissa del 17% ripetto alla lunghezza */
    .carousel-item {
        /*padding-top: 17%;*/
        max-height: 400px !Important;
    }

        .carousel-item img {
            /*position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        height: 100%;*/
        }

    .carousel-control-next-icon, .carousel-control-prev-icon {
        width: 20%;
        height: 10%;
        max-width: 80px;
        max-height: 80px;
    }           

    .carousel-indicators li {
        height: 8px;
    }

    .carousel-indicators:Hover {
        background-color: rgba(0,0,0,.5);
        margin-right: 25%;
        margin-left: 25%;
    }

    .carousel-item {
        /*min-height:320px;*/
    }