Lines grid

@grid: 5x8 / 500px auto _8px / #000 ^-16px;

--c: @p(
  color-mix(in srgb, #e71953, #fdc12d @r(100%)),
  color-mix(in srgb, #fdc12d, #54b8cc @r(100%))
);

background: @P(--c) @svg(
  --p: @r(.1, .9) @r(.1, .9);
  viewBox: 1;
  stroke: #000;
  stroke-width: .01;
  path*0-17 {
    --t: @n(/17);
    d: M $t 0 $p 0 $t $p 
         $t 1 $p 1 $t $p
  }
)