Lear More Here: https://www.elegantthemes.com/blog/theme-releases/brand-new-column-structures-for-divi

Today we are greatly extending Divi’s design capabilities by more than doubling the amount of available column structures, including new smaller ⅕ and ⅙ column types that you can use to build a variety of new designs. These new column structures greatly expand upon Divi’s traditionally small selection of columns types and in doing so open up a whole new realm of possibilities.