category.php

<?php
/**
 *******************************************************************************
 * //category.php
 *******************************************************************************
 *
 * The template for archives organized by a specific category.
 *
 * CODEX REF
 * https://codex.wordpress.org/Category_Templates
 *
 * @author
 * @copyright
 * @link
 * @todo
 * @license
 * @since
 * @version
**/
?>

<?php get_header(); ?>

<div class="jumbotron jumbotron-fluid">
    <div class="container">
        <h1>Category: <?php single_cat_title(); ?></h1>
    </div>
</div>

<div itemscope itemtype="http://schema.org/CollectionPage">
    <div class="container">   
        <div class="row">
            <div class="col-md-9">

                <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

                <article class="post" >
                    <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
                            
                    <p><em>
                    By <?php the_author(); ?> 
                    on <?php echo the_time('l, F jS, Y');?>
                    in <?php the_category( ', ' ); ?>.
                    <a href="<?php comments_link(); ?>">
                    <?php comments_number(); ?>
                    </a>
                    </em></p>            

                    <?php the_excerpt(); ?>
                </article>
                	
                <hr>

                <?php endwhile; else: ?>

                <div class="page-header">
                    <h1>Oh no!</h1>
                </div>

                <p>No content is appearing for this page!</p>

                <?php endif; ?>

            </div>

            <?php get_sidebar( 'blog' ); ?>

        </div>
        <?php theme_pagination(); ?>
    </div>
</div>

<?php get_footer(); ?>