Visual studio代码中的css自动前缀扩展不起作用

我到处寻找答案，但没有找到。css自动前缀器扩展在我的visual studio代码中不起作用。不仅是那个扩展，还有live server、css peek和其他许多功能。 这是我的

settings.json

{
  "workbench.colorTheme": "Solarized Dark",
  "code-runner.runInTerminal": true,
  "liveServer.settings.donotShowInfoMsg": true,
  "window.zoomLevel": 0.6,
  "editor.formatOnSave": true,
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "liveServer.settings.CustomBrowser": "chrome",
  "editor.linkedEditing": true,
  "auto-rename-tag.activationOnLanguage": ["html"],
  "css-auto-prefix.prefixes": {
    "transform": ["webkit", "moz", "ms", "o"],
    "transition": ["webkit", "moz", "ms", "o"],
    "border-radius": ["webkit", "moz", "ms", "o"],
    "animation": ["webkit"],
    "box-reflect": ["webkit"],
    "filter": ["webkit"],
    "font-feature-settings": ["webkit", "moz"],
    "backface-visibility": ["webkit"],
    "box-decoration-break": ["webkit"],
    "hyphens": ["webkit", "moz", "ms"],
    "marquee-direction": ["webkit"],
    "marquee-play-count": ["webkit"],
    "marquee-speed": ["webkit"],
    "marquee-style": ["webkit"],
    "text-combine-upright": ["webkit", "moz", "ms"],
    "text-decoration-color": ["moz"],
    "text-decoration-line": ["moz"],
    "text-decoration-style": ["moz"],
    "text-orientation": ["webkit"],
    "writing-mode": ["webkit", "ms"]
  },
  "css-auto-prefix.enabled": true
}

这是我的分机设置图片：