| <!DOCTYPE html> | |
| <style> | |
| #target { | |
| opacity: 0.5; | |
| } | |
| </style> | |
| <div id="target" style="width: 500px; height: 500px; background-color: blue;"></div> | |
| <div style="width: 300px; height: 300px; position: absolute; left: 20px; top: 400px; background-color: purple"> | |
| <div style="width:100px; height:100px; position:relative; left:10px; top:10px; background-color:yellow"></div> | |
| </div> |