adfjusting the width

Hi pdomenico0990,

Please check following article in the plugin documentation: https://wpdemo.webcodin.com/wordpress-plugin-wcp-contact-form/documentation/for-developers/custom-styles/css-snippets/how-to-align-form-and-labels-at-the-center-of-a-page/
This should give you a reference for your question.
If this won’t help, please contact us via direct support email [email protected] with link on your site and information about necessary result we’ll check it tomorrow in the morning.