The content element form allows a visitor of your site to contact you and leave a message. You will find a standard form in the Website Base. You can customize this form in the Forms module or create a new one.
The General tab has the same fields as the Header only content element. In this tab you only decide whether the form should have a heading.
In the Plugin tab, you only need to select the required form. If you only have one or two form definitions, the selection will not be difficult.
Once you save the content element, the form in the frontend looks like this or something similar to the picture below.