这是

<!-- Carousel
================================================== -->
<div id="myCarousel" class="carousel slide">
  <!-- Indicators -->
  <ol class="carousel-indicators">
    <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
    <li data-target="#myCarousel" data-slide-to="1"></li>
  </ol>
  <div class="carousel-inner">
    <div class="item active carousel-1">
      <div class="container">
        <div class="carousel-caption">
          <h1>Example headline.</h1>
          <p>Cras justo odio,dapibus ac facilisis in,egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-large btn-primary" href="#">Sign up today</a></p>
        </div>
      </div>
    </div>
    <div class="item carousel-2">
      <div class="container">
        <div class="carousel-caption">
          <h1>Another example headline.</h1>
          <p>Cras justo odio,egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-large btn-primary" href="#">Learn more</a></p>
        </div>
      </div>
    </div>

  </div>
  <a class="left carousel-control" href="#myCarousel" data-slide="prev"><span class="glyphicon glyphicon-chevron-left"></span></a>
  <a class="right carousel-control" href="#myCarousel" data-slide="next"><span class="glyphicon glyphicon-chevron-right"></span></a>
</div><!-- /.carousel -->

default css from bootstrap 3：

.carousel {
  position: relative;
}

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

.carousel-inner > .item {
  position: relative;
  display: none;
  -webkit-transition: 0.6s ease-in-out left;
          transition: 0.6s ease-in-out left;
}

.carousel-inner > .item > img,.carousel-inner > .item > a > img {
  display: block;
  height: auto;
  max-width: 100%;
  line-height: 1;
}

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

.carousel-inner > .active {
  left: 0;
}

.carousel-inner > .next,.carousel-inner > .prev {
  position: absolute;
  top: 0;
  width: 100%;
}

.carousel-inner > .next {
  left: 100%;
}

.carousel-inner > .prev {
  left: -100%;
}

.carousel-inner > .next.left,.carousel-inner > .prev.right {
  left: 0;
}

.carousel-inner > .active.left {
  left: -100%;
}

.carousel-inner > .active.right {
  left: 100%;
}

.carousel-control {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 15%;
  font-size: 20px;
  color: #ffffff;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0,0.6);
  opacity: 0.5;
  filter: alpha(opacity=50);
}

.carousel-control.left {
  background-image: -webkit-gradient(linear,0 top,100% top,from(rgba(0,0.5)),to(rgba(0,0.0001)));
  background-image: -webkit-linear-gradient(left,color-stop(rgba(0,0.5) 0),0.0001) 100%));
  background-image: -moz-linear-gradient(left,rgba(0,0.5) 0,0.0001) 100%);
  background-image: linear-gradient(to right,0.0001) 100%);
  background-repeat: repeat-x;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000',endColorstr='#00000000',GradientType=1);
}

.carousel-control.right {
  right: 0;
  left: auto;
  background-image: -webkit-gradient(linear,0.0001)),0.5)));
  background-image: -webkit-linear-gradient(left,0.0001) 0),0.5) 100%));
  background-image: -moz-linear-gradient(left,0.0001) 0,0.5) 100%);
  background-image: linear-gradient(to right,0.5) 100%);
  background-repeat: repeat-x;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00000000',endColorstr='#80000000',GradientType=1);
}

.carousel-control:hover,.carousel-control:focus {
  color: #ffffff;
  text-decoration: none;
  opacity: 0.9;
  filter: alpha(opacity=90);
}

.carousel-control .icon-prev,.carousel-control .icon-next,.carousel-control .glyphicon-chevron-left,.carousel-control .glyphicon-chevron-right {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 5;
  display: inline-block;
}

.carousel-control .icon-prev,.carousel-control .icon-next {
  width: 20px;
  height: 20px;
  margin-top: -10px;
  margin-left: -10px;
  font-family: serif;
}

.carousel-control .icon-prev:before {
  content: '\2039';
}

.carousel-control .icon-next:before {
  content: '\203a';
}

.carousel-indicators {
  position: absolute;
  bottom: 10px;
  left: 50%;
  z-index: 15;
  width: 60%;
  padding-left: 0;
  margin-left: -30%;
  text-align: center;
  list-style: none;
}

.carousel-indicators li {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin: 1px;
  text-indent: -999px;
  cursor: pointer;
  border: 1px solid #ffffff;
  border-radius: 10px;
}

.carousel-indicators .active {
  width: 12px;
  height: 12px;
  margin: 0;
  background-color: #ffffff;
}

.carousel-caption {
  position: absolute;
  right: 15%;
  bottom: 20px;
  left: 15%;
  z-index: 10;
  padding-top: 20px;
  padding-bottom: 20px;
  color: #ffffff;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0,0.6);
}

.carousel-caption .btn {
  text-shadow: none;
}

@media screen and (min-width: 768px) {
  .carousel-control .icon-prev,.carousel-control .icon-next {
    width: 30px;
    height: 30px;
    margin-top: -15px;
    margin-left: -15px;
    font-size: 30px;
  }
  .carousel-caption {
    right: 20%;
    left: 20%;
    padding-bottom: 30px;
  }
  .carousel-indicators {
    bottom: 20px;
  }
}

我添加了一些css：

.carousel {
  height: 500px;
}
.carousel-inner {
  height: 100%;
}

.carousel-1 {
  height: 100%;
  background: url(../images/carousel1.jpg)  no-repeat center center fixed;
  -webkit-background-size: cover;
  background-size: cover;
}

.carousel-2 {
  height: 100%;
  background: url(../images/carousel2.jpg)  no-repeat center center fixed;
  -webkit-background-size: cover;
  background-size: cover;
}

但我不知道如何我可以这个旋转木马与褪色效果。
我试图改变不透明度从1到0，当活动项目，但它使2个动画，它向左滑动和更改不透明度。

你可以帮我吗？