Adjust Sidebar Size in TwentyTwelve Theme

If you would like to shrink (or expand) the size of the sidebar, access the sidebar.php in the theme, and just add width.

Before

	<?php if ( is_active_sidebar( 'sidebar-1' ) ) : ?>
		




<div id="secondary" class="widget-area" role="complementary">
		
			<?php dynamic_sidebar( 'sidebar-1' ); ?>
			</div>




<!-- #secondary -->
	<?php endif; ?>

 

After

	<?php if ( is_active_sidebar( 'sidebar-1' ) ) : ?>
		




<div id="secondary" class="widget-area" role="complementary" style="width: 179px">
		
			<?php dynamic_sidebar( 'sidebar-1' ); ?>
			</div>




<!-- #secondary -->
	<?php endif; ?>

Note

You could add other code here that would create new features, add pictures, links, etc., which would be visible on all your posts and pages.

For instance, you could add an email link here.