.direct-child--type>Button {
  background-color: red;
  color: white;
}

.direct-child--class>.test-child {
  background-color: blue;
  color: white;
}

.direct-sibling--type Button+Label {
  background-color: green;
  color: white;
}

.direct-sibling--id #test-child+#test-child-2 {
  background-color: pink;
}

.direct-sibling--class .test-child+.test-child-2 {
  background-color: yellow;
}

.direct-sibling--attribute Button[data="test-child"]+Button[data="test-child-2"] {
  background-color: blueviolet;
  color: white;
}

.direct-sibling--pseudo-selector Button+Button:disabled {
  background-color: black;
  color: white;
}

.sibling-test-label {
  text-align: center;
}