| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Mixins: @contents fallbacks become nested declarations</title> |
| <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#contents-rule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| |
| <style> |
| @mixin --m1(@contents) { |
| @contents { |
| color: green; |
| } |
| } |
| #e1::after { |
| content: "AFTER"; |
| @apply --m1; |
| } |
| </style> |
| <div id="e1"></div> |
| <script> |
| test(() => { |
| assert_equals(getComputedStyle(e1, '::after').color, 'rgb(0, 128, 0)'); |
| }, 'Can mix declarations into pseudo-elements via @contents'); |
| </script> |
| |
| |
| <style> |
| @mixin --m2(@contents) { |
| @contents { |
| color: red; |
| } |
| } |
| /* Should match <div id=e2> with the specificity of :where(#e2) (zero), |
| not with the specificity of :is(:where(#e2), #u1). */ |
| :where(#e2), #u1 { |
| @apply --m2; |
| } |
| :where(#e2) { |
| color: green; /* Wins. */ |
| } |
| </style> |
| <div id="e2"></div> |
| <script> |
| test(() => { |
| assert_equals(getComputedStyle(e2).color, 'rgb(0, 128, 0)'); |
| }, 'Nested declarations from @contents have top-level specificity behavior'); |
| </script> |
| |
| </body> |
| </html> |
