/*
  cpt-city: gmt/GMT_hot (cpt)

  Palettes distributed with the Generic Mapping Tools (GMT)

  author: Paul Wessel, Walter Smith, Andreas Trawoeger
  copyright: GPLv2
  year: 2004, 2010
  url: https://phillips.shef.ac.uk/pub/cpt-city/gmt
*/
linear-gradient(
  0deg,
  rgb(  0,   0,   0)   0.000%,
  rgb(255,   0,   0)  37.500%,
  rgb(255, 255,   0)  75.000%,
  rgb(255, 255, 255) 100.000%
);