| <!DOCTYPE html> |
| <div style="width: 400px; border: 3px solid black;"> |
| <div id="target1" style=" |
| margin-left: 10px; width: 500px; border: 3px solid gray; |
| margin-right: auto;"> |
| </div> |
| </div> |
| <div style="width: 400px; border: 3px solid black; direction: rtl;"> |
| <div id="target2" style=" |
| margin-right: 10px; width: 500px; border: 3px solid gray; |
| margin-left: auto; "> |
| </div> |
| </div> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| test(() => { |
| assert_equals(getComputedStyle(target1).marginRight, "-116px"); |
| assert_equals(getComputedStyle(target2).marginLeft, "-116px"); |
| }, "Right-aligned float in zero-width block"); |
| </script> |
