LessColumns

=lesscolumns($width_of_page :960px, $number_of_columns :4, $column_padding :10px, $width_of_gutter :10px, $border_width :0px, $border_style :solid, $border_color :#333)
  $number_of_gutters:   $number_of_columns - 1
  $width_of_column:     ($width_of_page - ($width_of_gutter * $number_of_gutters)) / $number_of_columns - ($column_padding * 2) - ($border_width * 2)
  width: $width_of_page
  +pie-clearfix
  > * 
    width: $width_of_column
    margin-left: $width_of_gutter
    padding: $column_padding
    border: $border_width $border_style $border_color
    float: left

    &:first-child
      margin-left: 0px



#test
  +lesscolumns(962px, 4, 10px, 10px, 1px, dotted, #333)

    

IE8 doesn't

Sure it does. IE has better :first-child support than :last-child, for whatever reason.

http://www.quirksmode.org/css/contents.html#t17

John wins!