I use a variation of this as a bookmarklet, perhaps you'll find it useful:
data:text/html,<html contenteditable>
You could probably set that as the URL of your home page to get the behavior you described.
I add a style="height:100%" in the HTML tag so that clicking anywhere puts focus on it for editing. You could add other styling and initial content as desired.
data:text/html,<html contenteditable>
You could probably set that as the URL of your home page to get the behavior you described.
I add a style="height:100%" in the HTML tag so that clicking anywhere puts focus on it for editing. You could add other styling and initial content as desired.