@grid: 1 / 40vmin; clip-path: @shape( split: 120; frame: 15; r: cos(t/10)^sin(t)^sin(2t)*.9; ); background: linear-gradient( @m3(hsl(calc(@t/@r(15, 20)), 60%, 60%)) ); transform: rotate(calc(@t * .0001turn));