Comment centrer verticalement les légendes du carrousel Bootstrap et les positionner légèrement vers la gauche ?

<code class="html"><!-- start JumboCarousel -->
<div id="jumboCarousel" class="carousel slide" data-ride="carousel">

    <!-- Indicators -->
    <ol class="carousel-indicators hidden-xs">
        <li data-target="#jumboCarousel" data-slide-to="0" class="active"></li>
        <li data-target="#jumboCarousel" data-slide-to="1"></li>
        <li data-target="#jumboCarousel" data-slide-to="2"></li>
        <li data-target="#jumboCarousel" data-slide-to="3"></li>
    </ol><!-- end carousel-indicators -->

    <!-- Wrapper for Slides -->
    <div class="carousel-inner" role="listbox">
        <div class="item active" id="slide1">
            <a href="#"><img src="http://placehold.it/1920x720&amp;text=Slide+1" alt="Slide 1"></a>
            <div class="carousel-caption">
                <h1>Check Out this Moose</h1>
                <p class="lead">This text is super engaging and makes you want to click the button.</p>
                <a href="#" class="btn btn-lg btn-primary">Learn More</a>
            </div><!-- end carousel-caption -->
        </div><!-- end slide1 -->
        <div class="item" id="slide2">
            <img src="http://placehold.it/1920x720&amp;text=Slide+2" alt="Slide 2">
            <div class="carousel-caption"></code>