Making sidebar stay put

I been working on my blog category template and i’m having trouble making the sidebar stay up the top on the right.

It gets pushed down by the content/post. I’ve tried to place the <?php get_sidebar();?> code before the post and it stays there but cuts off the posts and comments.

This is happening both on my category template and singles template.

Heres my link https://www.beyondempty.net/site/category/blog/

Heres my code for the category template

<?php get_header(); ?>

<!-- BEGIN content -->
<div id="content">

	<div class="buffer">

	<?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
	<?php /* If this is a category archive */ if (is_category()) { ?>
	<h2 class="title">Welcome to my Personal <strong><?php single_cat_title(); ?></strong>.</h2>
	<?php /* If this is a tag archive */ } elseif( is_tag() ) { ?>
	<h2 class="title">Posts Tagged <strong><?php single_tag_title(); ?></strong></h2>
	<?php /* If this is a daily archive */ } elseif (is_day()) { ?>
	<h2 class="title">Archive for <?php the_time('F jS, Y'); ?></h2>
	<?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
	<h2 class="title">Archive for <?php the_time('F, Y'); ?></h2>
	<?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
	<h2 class="title">Archive for <?php the_time('Y'); ?></h2>
	<?php /* If this is an author archive */ } elseif (is_author()) { ?>
	<h2 class="title">Author Archive</h2>
	<?php /* If this is a paged archive */ } elseif (isset($_GET['paged']) &amp;&amp; !empty($_GET['paged'])) { ?>
	<h2 class="title">Blog Archives</h2>
	<?php } ?>

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

	<!-- begin post -->

	<div class="blogpost">
		<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
		<p class="date">Posted by: <?php the_author_posts_link(); ?> on <?php the_time('d F, Y') ?> | <?php comments_popup_link('No Comments', '1 Comment', '% Comments'); ?></p>
		<div class="postcont">
		<p ><?php echo dp_clean($post->post_content, 250); ?></p>
		<a class="readmore" href="<?php the_permalink(); ?>">Read More</a>
		</div>
		<div class="thumb"><a href="<?php the_permalink(); ?>"><?php dp_attachment_image($post->ID, 'thumbnail', 'alt="' . $post->post_title . '"'); ?></a></div>

	</div>

	<!-- end post -->

	<?php endwhile; ?>
	<p class="postnav">
		<?php next_posts_link('&laquo; Older Entries'); ?> &nbsp;
		<?php previous_posts_link('Newer Entries &raquo;'); ?>
	</p>
	<?php endif; ?>

	</div>

<?php get_sidebar();?> </div> <?php get_footer(); ?>

and my singles template

<?php get_header(); ?>

<!-- BEGIN content -->
<div id="content">

	<div class="buffer">

	<?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
	<?php /* If this is a category archive */ if (is_category()) { ?>
	<h2 class="title">Archive for the <strong><?php single_cat_title(); ?></strong> Category</h2>
	<?php /* If this is a tag archive */ } elseif( is_tag() ) { ?>
	<h2 class="title">Posts Tagged <strong><?php single_tag_title(); ?></strong></h2>
	<?php /* If this is a daily archive */ } elseif (is_day()) { ?>
	<h2 class="title">Archive for <?php the_time('F jS, Y'); ?></h2>
	<?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
	<h2 class="title">Archive for <?php the_time('F, Y'); ?></h2>
	<?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
	<h2 class="title">Archive for <?php the_time('Y'); ?></h2>
	<?php /* If this is an author archive */ } elseif (is_author()) { ?>
	<h2 class="title">Author Archive</h2>
	<?php /* If this is a paged archive */ } elseif (isset($_GET['paged']) &amp;&amp; !empty($_GET['paged'])) { ?>
	<h2 class="title">Blog Archives</h2>
	<?php } ?>

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

	<!-- begin post -->
	<div class="single">
		<h2><?php the_title(); ?></a></h2>
		<p class="date">Posted by: <?php the_author_posts_link(); ?> | on <?php the_time('d F, Y') ?></p>
		<?php the_content(); ?>
	</div>
	<!-- end post -->

	<!-- begin comments -->
	<div id="comments">
	<?php comments_template(); ?>
	</div>

	<!-- end comments -->

	<?php endif; ?>

	</div>

</div>
<?php get_sidebar();?>
</div>
<!-- END content -->
<?php get_footer(); ?>

Any help would be much appreciated!