Re: Grid of div’s without doubling up touching borders

[Senff]

Not sure if this would cover all possible situations, but you might want to switch it around and give the outer box a top/left border and each individual div a bottom/right border: http://jsfiddle.net/senff/vrLhY/41/

If you also need a border at the bottom right (where there’s a DIV “missing”) then you can give the outer box also a bottom right border and then work with some negative margins.