2 <div style=
"width: 200px; height: 200px; background-color: lightgreen"></div>
3 <div style=
"position: relative; top: -50px; left: 50px; width: 200px; height: 200px; background-color: blue">
4 <div id=
"child" style=
"background-color: green; width: 100px; height: 100px;"></div>