How to display previous and next images with a Boo

The effect I'm looking for can be seen in the following image, it is a carousel with 3 images.

How can I make the bootstrap carousel show the left and right images with an opacity of 0.7?

The following is my carousel template.

<div class="col-md-10 center-block">
    <img id="logo" src="./img/yoox_group.png" alt="yoog group" />

    <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
        <!-- Indicators -->
        <ol class="carousel-indicators">
            <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
            <li data-target="#carousel-example-generic" data-slide-to="1"></li>
            <li data-target="#carousel-example-generic" data-slide-to="2"></li>
        </ol>

        <!-- Wrapper for slides -->
        <div class="carousel-inner" role="listbox">
            <div class="item active">
                <img src="./img/carousel/carousel-001.jpg" alt="..." />
                <div class="carousel-caption">
                </div>
            </div>
            <div class="item">
                <img src="./img/carousel/carousel-002.jpg" alt="..." />
                <div class="carousel-caption">
                </div>
            </div>
            <div class="item">
                <img src="./img/carousel/carousel-003.jpg" alt="..." />
                <div class="carousel-caption">
                </div>
            </div>
        </div>
        <!-- Controls -->
        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
            <img id="arrowleft" src="./img/arrow_left.png" />
            <span class="sr-only">Previous</span>
        </a>
        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
            <img id="arrowright" src="./img/arrow_right.png" />
            <span class="sr-only">Next</span>
        </a>
    </div>
</div>

#arrowleft {
    background-color: #FFF;
    padding: 10px 8px;
    position: absolute;
    margin-left: -95px;
    top: 45%;
    z-index: 5;
    display: inline-block;
}
#arrowright {
    background-color: #FFF;
    padding: 10px 8px;
    position: absolute;
    margin-left: 67px;
    top: 45%;
    z-index: 5;
    display: inline-block;
}

Expanding on this answer to another question, if you add the following css to your code it will provide the effect you're looking for.

We basically have to expand .carousel-inner to be larger than .carousel, then center it and hide the overflow of .carousel.

To obtain the opacity effect, we expand the size of the previous and next arrow containers, then set a translucent white background.

Bootstrap >= 3.3.0

In Bootstrap version 3.3.0 there was a change in the CSS which invalidated the previous method. So this is the current method.

(Demo)

.carousel {
    overflow: hidden;
}
.carousel-inner {
    width: 150%;
    left: -25%;
}
.carousel-inner > .item.next, 
.carousel-inner > .item.active.right {
    -webkit-transform: translate3d(33%, 0, 0);
    transform: translate3d(33%, 0, 0);
}
.carousel-inner > .item.prev, 
.carousel-inner > .item.active.left {
    -webkit-transform: translate3d(-33%, 0, 0);
    transform: translate3d(-33%, 0, 0);
}
.carousel-control.left, 
.carousel-control.right {
    background: rgba(255, 255, 255, 0.3);
    width: 25%;
}

Bootstrap < 3.3.0

(Demo)

.carousel {
    overflow: hidden;
}
.carousel-inner {
    width: 150%;
    left: -25%;
}
.carousel-inner .active.left {
    left: -33%;
}
.carousel-inner .next {
    left: 33%;
}
.carousel-inner .prev {
    left: -33%;
}
.carousel-control.left, .carousel-control.right {
    background: rgba(255, 255, 255, 0.3);
    width: 25%;
}