<div id="myCarousel" class="carousel slide">
 <ol class="carousel-indicators">
 <li data-target="#myCarousel" data-slide-to="0"
 class="active"></li>
 <li data-target="#myCarousel" data-slide-to="1"></li>
 <li data-target="#myCarousel" data-slide-to="2"></li>
 </ol>
 <div class="carousel-inner">
 <div class="item active" style="background:#223240;">
 <a href="#"><img src="img/slide1.png" alt="第一张"></a>
 </div>
 <div class="item" style="background:#F5E4DC;">
 <a href="#"><img src="img/slide2.png" alt="第二张"></a>
 </div>
 <div class="item" style="background:#DE2A2D;">
 <a href="#"><img src="img/slide3.png" alt="第三张"></a>
 </div>
 </div>
 <a href="#myCarousel" data-slide="prev" class="carousel-controlleft">‹</a>
 <a href="#myCarousel" data-slide="next" class="carousel-controlright">›</a>
</div>

$('#myCarousel').carousel({
 //设置自动播放/2 秒
 interval : 3000,
}); 

$('.carousel-control').css('line-height', $('.carousel-innerimg').height() + 'px');
$(window).resize(function() {
 var $height = $('.carousel-inner img').eq(0).height() || $('.carousel-inner img').eq(1).height() || $('.carousel-inner img').eq(2).height();
 $('.carousel-control').css('line-height', $height + 'px');
}); 

a:focus {
 outline: none;
}
.navbar-brand {
 padding: 0;
}
#myCarousel {
 margin: 50px 0 0 0;
}
.carousel-inner .item img {
 margin: 0 auto;
}
.carousel-control {
 font-size: 100px;
}