{
  "css": {
    "selectors": {
      "-webkit-scrollbar-track-piece": {
        "__compat": {
          "description": "::-webkit-scrollbar-track-piece",
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/::-webkit-scrollbar",
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": {
              "version_added": "18"
            },
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": false,
              "notes": "See <a href='https://bugzil.la/1432935'>bug 1432935</a>."
            },
            "firefox_android": {
              "version_added": false,
              "notes": "See <a href='https://bugzil.la/1432935'>bug 1432935</a>."
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "15"
            },
            "opera_android": {
              "version_added": "14"
            },
            "qq_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": "1.0"
            },
            "uc_android": {
              "version_added": true
            },
            "uc_chinese_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": "≤37"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      }
    }
  }
}