Placing an image inside the Fast Secure Contact Form Message box

Hi Lowell, read the following URL.

Thank you

For the background in the message box, go to the form edit page, click
the Styles tab. find this setting:
Input textarea fields:
put your css in it
`background-color: transparent; background-image:
url(https://www.urltoyourimage/xx.jpg);
background-repeat: no-repeat; background-position: left top;`

click Save Changes.

Note: Sometimes your theme can interfere by causing the form style to
inherit css from your theme.
Sometimes you have to edit your theme css to achieve what you need.