| <!-- | |
| Any copyright is dedicated to the Public Domain. | |
| http://creativecommons.org/publicdomain/zero/1.0/ | |
| --> | |
| <!DOCTYPE html> | |
| <title>CSS Test: An invalid custom property name "--" as a var() name argument triggers the fallback.</title> | |
| <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"> | |
| <link rel="help" href="http://www.w3.org/TR/css-variables-1/#defining-variables"> | |
| <link rel="match" href="support/color-green-ref.html"> | |
| <style> | |
| /* "--" is not a valid <custom-property-name>, so "--: red" is dropped and the var() name argument | |
| substitutes to "--", which fails to parse as a name. The reference is guaranteed-invalid, so the | |
| fallback is used. https://drafts.csswg.org/css-variables-2/#funcdef-var */ | |
| p { | |
| color: red; | |
| --: red; | |
| color: var(--, green); | |
| } | |
| </style> | |
| <p>This text must be green.</p> |