| <!doctype html> | |
| <title>Test reference</title> | |
| <style> | |
| body { margin: 0 } | |
| #outer, #inner { | |
| background-color: purple; | |
| width: 50%; | |
| height: 100vh; | |
| } | |
| #inner { | |
| position: absolute; | |
| background-color: blue; | |
| top: 0; | |
| left: 50%; | |
| } | |
| </style> | |
| <div id="outer"> | |
| <div id="inner"></div> | |
| </div> |