less.js/test/css/accessors.css

.magic-box {
  content: "gold";
  width: 60cm;
  height: 40cm;
}
.magic-box #lock { color: silver; }
#accessors {
  content: "gold";
  width: 60cm;
}
.unlock {
  content: "gold";
  width: 60cm;
  height: 40cm;
  color: silver;
  border-color: orange;
}
.unlock #lock { color: silver; }