Почему точки/кнопки навигации не являются видимыми с использованием owlcarousel?

Почему навигационные кнопки не видны?

Я использую jQuery и owlcarousel (http://owlgraphic.com/owlcarousel/).

http://jsfiddle.net/bobbyrne01/s10bgckL/1/

html..

<div id="owl-demo">
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
    <div class="item">
        <img src="http://placehold.it/50x50" alt="Owl Image" />
    </div>
</div>

js..

$(document).ready(function () {
    $("#owl-demo").owlCarousel({

        autoPlay: 3000, //Set AutoPlay to 3 seconds
        dots: true,
        items: 2,
        itemsDesktop: [1199, 3],
        itemsDesktopSmall: [979, 3]
    });
});

css..

#owl-demo .item {
    margin: 3px;
}
#owl-demo .item img {
    display: block;
    width: 50%;
    height: auto;
}