Fields/Width and Height
From Boxtheweb
< Fields
The Width and Height fields specify, in pixels, how wide/tall the box should be. If they are blank the box auto-sizes accordingly. Because of certain calculations that need a specific width, having a width number is reccomended. Try starting with 400 and then changing it from there. Specifying a height is not nearly so important, and this field can often be left blank.
