css_position_study

stylesheet.css

.aaa {
  width: 100px;
  height: 100px;
  background-color: red;
}

.bbb {
  width: 100px;
  height: 100px;
  background-color: blue;
}

.ccc {
  width: 50px;
  height: 50px;
  background-color: green;
}