My side bar are shifted

Post a link to the site with the problem so that others may see it and offer informed suggestions on how it might be repaired.

https://peppersandmore.com.previewdns.com/

to begin with, delete that code from your style.css:

<?php if (function_exists('get_recent_comments')) { ?>
   <li><h2><?php _e('Recent Comments:'); ?></h2>
   <ul><?php get_recent_comments(); ?></ul>
   </li>
<?php } ?>   

<?php if (function_exists('get_recent_trackbacks')) { ?>
   <li><h2><?php _e('Recent Trackbacks:'); ?></h2>
   <ul><?php get_recent_trackbacks(); ?></ul>
   </li>
<?php } ?>

and then come back … ??