author-bio.php

<?php
/**
 * The template for displaying Author bios
 *
 * @package stackdesign
 */
?>

<div class="author-info">
  <h2 class="author-heading">
    <?php _e( 'Published by', 'twentyfifteen' ); ?>
  </h2>
  <div class="author-avatar">
    <?php
		/**
		 * Filter the author bio avatar size.
		 *
		 * @since Twenty Fifteen 1.0
		 *
		 * @param int $size The avatar height and width size in pixels.
		 */
		$author_bio_avatar_size = apply_filters( 'twentyfifteen_author_bio_avatar_size', 56 );

		echo get_avatar( get_the_author_meta( 'user_email' ), $author_bio_avatar_size );
		?>
  </div>
  <!-- .author-avatar -->
  
  <div class="author-description">
    <h3 class="author-title"><?php echo get_the_author(); ?></h3>
    <p class="author-bio">
      <?php the_author_meta( 'description' ); ?>
      <a class="author-link" href="<?php echo esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ); ?>" rel="author"> <?php printf( __( 'View all posts by %s', 'twentyfifteen' ), get_the_author() ); ?> </a> </p>
    <!-- .author-bio --> 
    
  </div>
  <!-- .author-description --> 
</div>
<!-- .author-info -->