New Code Section

<?php if (in_category('sponsored-posts')) : ?>
    <!-- Add code for Sponsored Posts -->

<?php elseif (in_category('guest-posts')) : ?>
    <div class="post_heading"><h2 class="left_heading <?php disable_author(); ?>">About Guest Article</h2></div><!-- #post_heading -->
    <div class="author <?php disable_author(); ?>">
        <div class="icon">
            <?php echo get_avatar( get_the_author_email(), '75' ); ?>
            <div class="title"><?php echo get_the_author_link(); ?></div><!-- #title -->
        </div><!-- #icon -->
        <div class="authorcontent">
            <p><?php the_author_meta("description"); ?></p>
        </div><!-- #content -->
    </div><!-- #author -->
<?php else : ?>
    <div class="post_heading"><h2 class="left_heading <?php disable_author(); ?>">About Author</h2></div><!-- #post_heading -->
    <div class="author <?php disable_author(); ?>">
        <div class="icon">
            <?php echo get_avatar( get_the_author_email(), '75' ); ?>
            <div class="title"><?php echo get_the_author_link(); ?></div><!-- #title -->
        </div><!-- #icon -->
        <div class="authorcontent">
            <p><?php the_author_meta("description"); ?></p>
        </div><!-- #content -->
    </div><!-- #author ? -->
<?php endif; ?>