基础 - JS插件 - 轮播图

大图在小屏幕下居中显示的2个方案

方案1

背景图的center center

方案2

子绝父相　　left：50% 　　margin-left:-width的一半

<!--#zw-carousel-->
<section id="zw-carousel" class="carousel slide" data-ride="carousel">
    <!--活动指示器-->
    <ol class="carousel-indicators">
        <li data-target="#zw-carousel" data-slide-to="0" class="active"></li>
        <li data-target="#zw-carousel" data-slide-to="1"></li>
        <li data-target="#zw-carousel" data-slide-to="2"></li>
    </ol>
    <!--轮播内容-->
    <div class="carousel-inner" role="listbox">
        <div class="item active" style="background-image: url(‘http://caifu.weijinsuo.com/showNewsImage.do?pic=14752860565672788.jpg‘)">
        </div>
        <div class="item" style="background-image: url(‘http://caifu.weijinsuo.com/showNewsImage.do?pic=14749742777184602.jpg‘)">
        </div>
        <div class="item" style="background-image: url(‘http://caifu.weijinsuo.com/showNewsImage.do?pic=14760008303724222.jpg‘)">
        </div>
    </div>
    <!--控制按钮-->
    <a href="#zw-carousel" class="left carousel-control" role="button" data-slide="prev">
    </a>
    <a href="#zw-carousel" class="right carousel-control" role="button" data-slide="next">
    </a>
</section>

#zw-carousel {

}
#zw-carousel .carousel-inner .item {
    height: 340px;
    background-repeat: no-repeat;
    background-position: center center;
    -webkit-background-size: cover;
    background-size: cover;
}