Full Width Page Template Issue

Ok guys, hopefully someone smarter than me can figure this out. I’ve spent the last couple of days reading at least a dozen related threads and nothing I have tried has worked. Here’s the issue…
I’m using the zeebizzcard theme, with a child theme. What I want to do is set up a custom page template with a wider content area. It doesn’t exactly have to be full width or lose the sidebar, but it’s ok if it is. I just want the content area wider to fit a flash game in.
As of right now I have created a page template by copying page.php and removing the sidebar(since nothing else was working). I have tried editing and adding new css but nothing has worked.
Here’s the code for my custom template:

<?php
/*
Template Name: fullwidth
*/
?>

<?php get_header(); ?>

	<div id="content">

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

			<div id="page-<?php the_ID(); ?>" <?php post_class(); ?>>

				<h2 class="page-title"><?php the_title(); ?></h2>
				<?php edit_post_link(__( 'Edit', 'themezee_lang' )); ?>

				<div class="entry">
					<?php the_content(); ?>
					<div class="clear"></div>
					<?php wp_link_pages(); ?>
				</div>

			</div>

		<?php endwhile; ?>

		<?php endif; ?>

		<?php comments_template(); ?>

	</div>

	<?php get_footer(); ?>

and here’s the link to the page in question: jasoncarnrike.com/jigsaw-puzzle

Nothing I do to the “content” div in css changes the page at all. I (at separate times)created a new “content2” div and a content.fullwidth class, added them to the template and they also did nothing. I am clearly missing something. I’ve tried so many offered solutions, I couldn’t even list them here. Can anyone help me with this or at least point me in the right direction? Thanks!