| <!DOCTYPE html> |
| <title>CSS Anchor Positioning: position-area with writing-mode and direction</title> |
| <link rel="help" href="https://drafts.csswg.org/css-anchor-position/#position-area"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #abs-container { |
| writing-mode: vertical-lr; |
| position: absolute; |
| width: 400px; |
| height: 400px; |
| } |
| #anchor { |
| anchor-name: --a; |
| width: 100px; |
| height: 100px; |
| } |
| #anchored { |
| position: absolute; |
| writing-mode: horizontal-tb; |
| direction: rtl; |
| position-anchor: --a; |
| position-area: self-end self-start; |
| width: 100px; |
| height: 100px; |
| } |
| </style> |
| <div id="abs-container"> |
| <div id="anchor"></div> |
| <div id="anchored"></div> |
| </div> |
| <script> |
| test(() => { |
| assert_equals(anchored.offsetTop, 100, "positioned below the anchor"); |
| assert_equals(anchored.offsetLeft, 100, "positioned to the right of the anchor"); |
| }, "'self-end self-start' of horizontal-tb/rtl is physically 'bottom right'"); |
| </script> |
