Is there a way to set the background to fit to a specific position no matter what

Unfortunately I'm not very familiar with modules, other than that they are tools the non-web-builders can use with Joomla to re-set-up their pages.

However, if this were a normal web page, you would fake it : ) The image would actually be at the bottom, while the dotten border and slight background colour would be either held by the <p> OR if there's more than one <p> (likely) there'd be an additional div or something to wrap around the <p>s and carry the border... the div containing the background image would have some bottom-padding to keep the dotted border and text away from the very end of the image... thus, making it look like the image is "sticking out."

However, I have no clue how much you can control this code...? Can you change the actual HTML or only play with modules around them?