Using a full-width hero image that can be changed in the dashboard by a user

I’m building a site using bootstrap and converting to WordPress. I have some hero images on pages where a user won’t need to change them. However, I have a custom post type that I really want the same style of hero image, but for it to be changeable within the post type edit screen.

My current hero images on other pages are referenced in my CSS, I tried using a full width container as a feature image but then my text overlay stops working.

Here is my front end code:

        <section id="location-feature">
    <div class="container-fluid no-padding">

           <div class="row">

            <div class="col-md-12" padding-0>

                <!-- If user uploaded image -->

                    <?php if( !empty($location_hero_image)) : ?>

<img class="img-responsive" src="<?php echo $location_hero_image['url']; ?>" alt="<?php echo $location_hero_image['alt']; ?>">

                        <?php endif; ?>




                <h1><?php echo $location_hero_title; ?></h1>

                <p class="lead"><?php echo $location_hero_subtext; ?></p>


            </div><!-- end col -->
        </div><!-- row -->
    </div><!-- container -->
</section>

<?php
    $args = array('post_type' => 'your_custom_post_type');
    query_posts( $args );

    while (have_posts()) : the_post();
     // check if the post has a Post Thumbnail assigned to it.
     if ( has_post_thumbnail() ) {
        //access feature image
        the_post_thumbnail();
    } 
    endwhile;
?>