How to change HTML-code of widgets in WordPress
It's defined in your functions.php file. You can easily change it by passing in the correct options
if (function_exists('register_sidebar')) { $opts = array( 'name' => 'IndexWidgets', 'before_widget' => '<div id="%1$s2" class="home_box %2$s">', 'after_widget' => '</div></div>', 'before_title' => '<h2>', 'after_title' => '</h2><div class="home_box_body">' ); register_sidebar($opts);}This is the Wordpress codex link for reference : http://codex.wordpress.org/Function_Reference/register_sidebar