.test-square-1 {
  width: 20px;
  height: 20px;
}
.test-square-2 {
  width: 50px;
  height: 50px;
}
.test-square-3 {
  width: 10rem;
  height: 10rem;
}
.test-rect-1 {
  width: 100px;
  height: 30px;
}
.test-rect-2 {
  width: 200px;
  height: 100px;
}
.test-rect-3 {
  width: 20rem;
  height: 10rem;
}
.test-triangle-1 {
  width: 0px;
  height: 0px;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #333;
}
.test-triangle-2 {
  width: 0px;
  height: 0px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 5px solid #369;
}
.test-triangle-3 {
  width: 0px;
  height: 0px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid #369;
}
.test-triangle-4 {
  width: 0px;
  height: 0px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-right: 5px solid #369;
}
.test-triangle-5 {
  width: 0px;
  height: 0px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 5px solid #369;
}
.test-circle-1 {
  border-radius: 20px;
  width: 20px;
  height: 20px;
}
.test-circle-2 {
  border-radius: 20px/40px;
  width: 20px;
  height: 40px;
}
.test-circle-3 {
  border-radius: 5rem/3rem;
  width: 5rem;
  height: 3rem;
}
