Cannot center header image on Custom Theme

Hello,

I’ve been managing this organization’s website since I took over several year ago and have had no issues updating various items until now.

It is a custom theme and I cannot get the header image centered. This is the code for the homepage.

<?php
/*
Template Name: Home Page
*/
?>

<?php get_header(); ?>

<section id=”highlights_container”>
<div class=”highlights_box first_highlights_box”>
<?php dynamic_sidebar(‘Home Page Recent News’); ?>
</div>
<div class=”highlights_box”>
<?php dynamic_sidebar(‘Home Page Recent Articles’); ?>
</div>
<div class=”highlights_box last_highlights_box”>
<?php dynamic_sidebar(‘Events’); ?>
</div>
<div class=”clear”></div>
</section>
<?php get_footer(); ?>

Please tell me what I can do to fix this issue. Also, I can no longer hyperlink the image to a certain page. If you can help with this as well I would be extremely appreciative. Thanks in advance!!!

The page I need help with: [log in to see the link]