odd / even

put this in your theme’s functions.php:

function odd_even_class($classes) {

	global $post_num;
        $class = '';

	if ( ++$post_num % 2 ) {
		$class = 'even';
	} else {
		$class = 'odd';
	}

	if($class != '') {
	  $classes[] = $class;
	}
	return $classes;
}
add_filter('post_class', 'odd_even_class');

it will add the odd even classes to the post_class:
http://codex.ww.wp.xz.cn/Function_Reference/post_class

Now you can style it like so:

.even .words {
// your css
}
.odd .words {
// your css
}

You’re welcome. Glad you got it resolved.