@property --hibox {
  syntax: '<length>';
  inherits: false;
  initial-value: 24px;
}
@property --colorA {
  syntax: '<color>';
  inherits: false;
  initial-value: #9800f021;
}
@property --colorB {
  syntax: '<color>';
  inherits: false;
  initial-value: #0048f021;
}
@property --colorC {
  syntax: '<color>';
  inherits: false;
  initial-value: #00f02c21;
}