/*
  cpt-city: jjg/serrate/seq/srtGreys04 (cpt)

  Serrated versions of Cynthia Brewer's sequential schemes

  author: J.J. Green
  copyright: Apache-like
  year: 2004
  url: https://phillips.shef.ac.uk/pub/cpt-city/jjg/serrate/seq
*/
linear-gradient(
  0deg,
  rgb(204, 204, 204)   0.000%,
  rgb(247, 247, 247)  25.000%,
  rgb(150, 150, 150)  25.000%,
  rgb(204, 204, 204)  50.000%,
  rgb( 99,  99,  99)  50.000%,
  rgb(150, 150, 150)  75.000%,
  rgb( 37,  37,  37)  75.000%,
  rgb( 99,  99,  99) 100.000%
);