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<div id="carousel-principal" class="carousel slide" data-ride="carousel">
	<div class="carousel-inner" role="listbox">

    <?php
    $arg = array(
        'post_type' => 'slider_custom',
        'posts_per_page' => -1,
    );
    $loop = new WP_Query($arg);
		$i = 1;
    while ($loop->have_posts()) : $loop->the_post();

        ?>
            <div class="item<?php if ($i == 1) echo ' active'; ?>">
							<div class="fill" style="background-image:url(<?php echo get_the_post_thumbnail_url(); ?>)"></div>
							<div class="carousel-caption">
                    <h2> <?php the_title(); ?> </h2>
                </div>
          </div>
        <?php
        $i++;

        ?>

    <?php
    endwhile;
    wp_reset_query();
?>
</div>
  <!-- Controls -->
  <a class="left carousel-control" href="#carousel-principal" role="button" data-slide="prev">
    <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
    <span class="yukuna-left"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="right carousel-control" href="#carousel-principal" role="button" data-slide="next">
    <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
    <span class="yukuna-right"></span>
    <span class="sr-only">Next</span>
  </a>
</div> <!-- END carousel-principal -->