* {
  all: unset;
}

.background {
  background-color: yellow;
  color: purple;
}

button {
  border-radius: 10px;
  padding: 5px;
}

.top {
  border-top: 5px solid yellow;
  padding-top: 0px;
}

.right {
  border-right: 5px solid yellow;
  padding-right: 0px;
}

.bottom {
  border-bottom: 5px solid yellow;
  padding-bottom: 0px;
}

.left {
  border-left: 5px solid yellow;
  padding-left: 0px;
}