This enhancement increases your design flexibility by enabling you to edit the style of the Contact Form submission message - the message that a website visitor receives after completing a contact form. It may thank the user for contacting the website owner, confirm a newsletter subscription, etc.
The new flexibility enables you to control the font, format, alignment and text direction of this message, for a more customized experience.
To customize the text, go to the Submission tab in the Contact Form content editor.