:doodle { @grid: 20x1 / 60vmin; } @place-cell: center; @size: 1000%; transform: translate(@r(-100%, 100%)); mix-blend-mode: overlay; background: @multi(500, ( repeating-radial-gradient( @p(#E63946, #F1FAEE, #A8DADC, #457B9D, #1D3557) @r(25%), transparent ) @r(0%, 100%, .1) @r(0%, 100%, .1) / @r(5%, 8%) @lr() no-repeat ));