Style my widget?

I’ve added a sidebar widget, but I don’t know how to style it. Please help…

Here is my sidebar.php:
<div id=”sidebar”>
<?php if ( !function_exists(‘dynamic_sidebar’)
|| !dynamic_sidebar() ) : ?>
<div class=”title”>About</div>
<p>This is my blog.</p>
<div class=”title”>Links</div>

• Example

<?php endif; ?>
</div>

Here is my functions.php:
<?php
if ( function_exists(‘register_sidebar’) )
register_sidebar(array(
‘before_widget’ => ‘<div id=”%1$s” class=”widget %2$s”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<div class=”title”>’,
‘after_title’ => ‘</div>’,
));
?>