"default CSS"

Hello

I’m trying to get the styling of my CF7 form just right. After integrating it with your plugin, I’m intrigued by exactly what code it loads to correct positioning of the checkbox.

There’s quite a difference between having this “default CSS” loaded and not having it. See the following pictures. Could you tell me what the code is, where it goes and how I can style the checkbox?

Thanks very much.

https://wordpress.org/plugins/mailchimp-for-wp/