Moving Sidebar / Editing CSS on Gallery Theme

One of my clients really wants the sidebar to be on the right side of the page rather than the left, and I think the Gallery theme is the best fit for his site.

I was able to change the font specifications using CSS, which works, but the header image I added isn't working, and the sidebar is still on the left when I want it on the right. Can someone tell me what's going on?

/*

Theme Name: Gallery Child
Theme Date: 20/12/2010
Version: 1.4.7
Theme URI: https://premium.wpmudev.org/
Description: A flexible gallery style theme for WordPress and BuddyPress using custom post types or a page template
Author: Tammie Lister - WPMU DEV - The WordPress Experts
Author URI: https://premium.wpmudev.org
License: GNU General Public License, v2 (or newer)
License URI: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html

Tags: buddypress, one-column, four-columns, two-columns, fixed-width, custom-colors, custom-header, custom-background, custom-menu, theme-options, threaded-comments, translation-ready

Uses BP-Default theme files and styling for BuddyPress components with some customisation for theme.
Included in theme to allow for own child themes rather than being child of BP-Default

The CSS, XHTML and design is released under GPL:
http://www.opensource.org/licenses/gpl-license.php

Template: gallery

*/

#header {
background: url("<?php bloginfo('stylesheet_directory'); ?>http://www.learningparis.com/wp-content/uploads/2012/11/learningparis1.jpg")
no-repeat bottom center; }
#headerimg {
margin: 7px 9px 0;
height: 350px;
width: 960px; }

#sidebar {
float: right;
text-align: left;
width: 200px; }

h1,h2,h3,h4,h5 {font-family: 'Felipa', cursive;}
p {font-family:serif;}

/* 65787-1348481511-ai */