Modify the Table style element. The STYLE statement with the FROM option specified creates the style element Table which inherits all of its style elements and style attributes from the instance of Table in the Styles.RTF style. The CELLSPACING=, RULES=, and FRAME= attributes modify the cellspacing, rules, and frame of the table.

   style table from table /
      cellspacing=0 rules=groups frame=void;
   end;
run;