| <!DOCTYPE html> |
| <title>The revert-rule keyword: basic behavior</title> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/10443"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| #test1 { |
| color: green; |
| } |
| #test1 { |
| color: red; |
| color: revert-rule; |
| } |
| </style> |
| <div id=test1></div> |
| <script> |
| test(() => { |
| assert_true(CSS.supports('color:revert-rule')); |
| assert_equals(getComputedStyle(test1).color, 'rgb(0, 128, 0)') |
| }, 'The revert-rule keyword rolls back to the previous rule'); |
| </script> |
| |
| |
| <style> |
| #test2 { /* Specificity: (0, 0, 1) */ |
| color: red; |
| } |
| #test2#test2#test2 { /* Specificity: (0, 0, 3) */ |
| color: red; |
| color: revert-rule; |
| } |
| #test2#test2 { /* Specificity: (0, 0, 2) */ |
| color: green; |
| } |
| </style> |
| <div id=test2></div> |
| <script> |
| test(() => { |
| assert_true(CSS.supports('color:revert-rule')); |
| assert_equals(getComputedStyle(test2).color, 'rgb(0, 128, 0)') |
| }, 'Cascade order determines the previous rule, not order of appearance'); |
| </script> |
| |
| |
| <style> |
| #test3 { |
| color: red; |
| } |
| #test3 { |
| color: green; |
| } |
| </style> |
| <div id=test3 style="color:red; color:revert-rule"></div> |
| <script> |
| test(() => { |
| assert_true(CSS.supports('color:revert-rule')); |
| assert_equals(getComputedStyle(test3).color, 'rgb(0, 128, 0)') |
| }, 'Reverting from style attribute reverts to regular rules'); |
| </script> |
| |
| |
| <style> |
| #test4 { z-index: 1; } |
| #test4 { z-index: 2; } |
| #test4 { z-index: -1; z-index: revert-rule; } |
| #test4 { z-index: -1; z-index: revert-rule; } |
| #test4 { z-index: -1; z-index: revert-rule; } |
| </style> |
| <div id=test4></div> |
| <script> |
| test(() => { |
| assert_true(CSS.supports('z-index:revert-rule')); |
| assert_equals(getComputedStyle(test4).zIndex, '2') |
| }, 'A chain of revert-rule works'); |
| </script> |
