#keyword {
  color: red;
}

#rgb-longhand {
  color: #ff0000;
}

#rgb-shorthand {
  color: #f00;
}

#rgb-function-numbers {
  color: rgb(255, 0, 0);
}

#rgb-function-percentage {
  color: rgb(100%, 0%, 0%);
}

#rgba {
  color: rgba(255, 0, 0, 0.5);
}

#hsl-function {
  color: hsl(0, 100%, 50%);
}

#hsla {
  color: hsla(0, 100%, 50%, 50%);
}