| <!DOCTYPE HTML> | |
| <title> Ensure left doesn't take effect if margin isn't auto </title> | |
| <style> | |
| div { | |
| inset: 0; | |
| writing-mode: vertical-rl; | |
| background-color: black; | |
| margin: auto; | |
| left: 10px; | |
| margin-right: 10px; | |
| position: absolute; | |
| block-size: 200px; | |
| inline-size: 100px; | |
| border: 5px solid red; | |
| } | |
| </style> | |
| <div></div> |