Footer alignment problem

Hello,

Could anyone tell me how to center my footer content?
I tried adding some code to the CSS unsuccessfully.

Thank you!

<?php
global $options;
foreach ($options as $value) {
	if (get_settings( $value['id'] ) === FALSE) {
		$$value['id'] = $value['std'];
	}
	else {
		$$value['id'] = get_settings( $value['id'] );
	}
}
?>

	</div> <!-- content -->

		<div id="footer">

		<div class="footer-inside">

			<div class="about-us">
				<h2>Site Map</h2>
				<p><?php echo stripslashes($yam_aboutus); ?></p>
			</div> <!-- about-us -->

			<div class="latest-tweets">
				<h2>Pictures Galleries</h2>
				<br>
				<br /><a href='https://mysite.com/wp/gal1/'>??Gal 1</a>
				<br>
				<br /><a href='https://mysite.com/wp/gal2/'>??Gal 2</a> 

				</ul>

			</div> 

<div class="subscribe">
                		<h2>Subscribe to our newsletter</h2>

<?php echo do_shortcode( '[contact-form-7 id="482" title="Subscribe"]' ); ?>	

</div> <!-- subscribe -->

		 </div> <!-- footer-inside -->

		</div> <!-- footer -->

		<div id="footer-credits">
			<div class="footer-credits-inside">
				<div class="footer-credits-left">

				</div>
				<div class="footer-credits-right">
					© Copyright <?php echo date('Y'); ?> <a href="https://www.mysite.com">MYSITECOM</a> All Rights Reserved
				</div>
			</div>

		</div> <!-- footer-credits -->
	<?php wp_footer(); ?>
</body>
</html>