{"action":"created","issue":{"url":"https://api.github.com/repos/postcss/autoprefixer/issues/821","repository_url":"https://api.github.com/repos/postcss/autoprefixer","labels_url":"https://api.github.com/repos/postcss/autoprefixer/issues/821/labels{/name}","comments_url":"https://api.github.com/repos/postcss/autoprefixer/issues/821/comments","events_url":"https://api.github.com/repos/postcss/autoprefixer/issues/821/events","html_url":"https://github.com/postcss/autoprefixer/issues/821","id":222087107,"node_id":"MDU6SXNzdWUyMjIwODcxMDc=","number":821,"title":"Autoprefixer cannot generate prefix for custom scrollbar","user":{"login":"sarazhang123","id":8096659,"node_id":"MDQ6VXNlcjgwOTY2NTk=","avatar_url":"https://avatars2.githubusercontent.com/u/8096659?v=4","gravatar_id":"","url":"https://api.github.com/users/sarazhang123","html_url":"https://github.com/sarazhang123","followers_url":"https://api.github.com/users/sarazhang123/followers","following_url":"https://api.github.com/users/sarazhang123/following{/other_user}","gists_url":"https://api.github.com/users/sarazhang123/gists{/gist_id}","starred_url":"https://api.github.com/users/sarazhang123/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sarazhang123/subscriptions","organizations_url":"https://api.github.com/users/sarazhang123/orgs","repos_url":"https://api.github.com/users/sarazhang123/repos","events_url":"https://api.github.com/users/sarazhang123/events{/privacy}","received_events_url":"https://api.github.com/users/sarazhang123/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2017-04-17T08:03:06Z","updated_at":"2018-12-16T23:14:21Z","closed_at":null,"author_association":"NONE","body":"I use `grunt-postcss` to generate css prefix. \r\n\r\nConfiguration as follows: \r\n```\r\nprocessors: [\r\n   require('autoprefixer') {\r\n      browsers: [\r\n        '> 0.04%'\r\n      ]\r\n    }\r\n]\r\n```\r\nSass as follows:\r\n```\r\n@mixin custom-scroll($thumb-bgcolor: $gray-background-color, $track-bgcolor: $white-background-color) {\r\n  &::scrollbar {\r\n    background-color: transparent;\r\n    width: 5px;\r\n    height: 5px;\r\n  }\r\n\r\n  &::scrollbar-thumb {\r\n    background: $thumb-bgcolor;\r\n    border-radius: 2px;\r\n    min-height: 6px;\r\n    width: 4px;\r\n  }\r\n\r\n  &::scrollbar-track {\r\n    background: $track-bgcolor;\r\n    border-radius: 2px;\r\n  }\r\n}\r\n```\r\nBut, autoprefixer cannot generate prefix for `scrollbar-xxx`, such as `-webkit-scrollbar`, `-webkit-scrollbar-thumb`, `-webkit-scrollbar-track`. It is a bug or it is my wrong configuration?"},"comment":{"url":"https://api.github.com/repos/postcss/autoprefixer/issues/comments/447685703","html_url":"https://github.com/postcss/autoprefixer/issues/821#issuecomment-447685703","issue_url":"https://api.github.com/repos/postcss/autoprefixer/issues/821","id":447685703,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0NzY4NTcwMw==","user":{"login":"ai","id":19343,"node_id":"MDQ6VXNlcjE5MzQz","avatar_url":"https://avatars1.githubusercontent.com/u/19343?v=4","gravatar_id":"","url":"https://api.github.com/users/ai","html_url":"https://github.com/ai","followers_url":"https://api.github.com/users/ai/followers","following_url":"https://api.github.com/users/ai/following{/other_user}","gists_url":"https://api.github.com/users/ai/gists{/gist_id}","starred_url":"https://api.github.com/users/ai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ai/subscriptions","organizations_url":"https://api.github.com/users/ai/orgs","repos_url":"https://api.github.com/users/ai/repos","events_url":"https://api.github.com/users/ai/events{/privacy}","received_events_url":"https://api.github.com/users/ai/received_events","type":"User","site_admin":false},"created_at":"2018-12-16T23:14:21Z","updated_at":"2018-12-16T23:14:21Z","author_association":"MEMBER","body":"@jonaskuske just post comment in this issue with `official selector` → `webkit selector`"}}
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