Single Page No Right Column

Trying to eliminate the right column on my Forum page only and to get the Mingle Forum to span the full page width.

Created the following template called Full-pafe.php

[code moderated as per forum rules - please use the pastebin]

Added the following to the style.css

.page-template-full-page-php #content {
...
width: 550px; /* this will be overriden by the styling in the next group */
...
}
#content.wide { width: 800px; }
}
#comment {
background-image: none;
width: 100%;
}

[please use backticks or the 'code' button to mark any small amount of code that you post here directly]

Brains going so I'm sure I tore that up... Anyway the site Forum is located at> https://www.dowknowhow.com/?page_id=1073

As you can see I've only been able to adjust the background image and remove the sidebar... I suck at php so please have patients when I reply with something you perceive as a silly response. Any help is greatly appreciated.