| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <style> | |
| .box { | |
| position: absolute; | |
| height: 50px; | |
| width: 100px; | |
| left: 20px; | |
| background-color: black; | |
| outline: 4px solid gray; | |
| filter: invert(1); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <!-- You should see an outlined white rectangle with a black one beneath it. --> | |
| <div class="box"> | |
| <div class="box" style="top: 60px; left: 0"></div> | |
| </div> | |
| </body> | |
| </html> |