Creates a box :)
- {{{1}}} - background color
- {{{2}}} - font/border color
- {{{3}}} - class (style)
- {{{4}}} - width (must include % or units)
- {{{5}}} - right/left margin (for indenting) (must include units)
- {{{6}}} - column-width
This box requires a </div> tag at the end of the content enclosed by the box.