Oldphaloskepsis/template-parts/content.php

<?php
/**
 * The template part for displaying content
 *
 * @package WordPress
 * @subpackage Ben_Goldsworthy
 * @since Ben Goldsworthy 1.0
 */
?>

<div class="col-m-6 col-4 col-w-3">
   <a href="<?php the_permalink(); ?>">
      <article id="post-<?php the_ID(); ?>" <?php post_class(); ?> style="background-image: url('<?php the_post_thumbnail_url(); ?>');">
         <header class="entry-header">
            <?php if ( is_sticky() && is_home() && ! is_paged() ) : ?>
               <span class="sticky-post"><?php _e( 'Featured', 'bengoldsworthy' ); ?></span>
            <?php endif; ?>

            <?php 
               if (strlen(get_the_title()) > 70) $small= "vsmall";
               elseif (strlen(get_the_title()) > 35) $small = "small";
               the_title( '<h2 class="post-title '.$small.'">', '</h2>' ); 
            ?>
         </header><!-- .entry-header -->
      </article><!-- #post-## -->
   </a>
</div>