只需在设置中添加三行。json文件

"css.lint.unknownAtRules": "ignore",
"css.validate": true,
"scss.validate": true,

确保安装PostCSS语言支持，在VSCODE中找到扩展。 这将删除正在显示的错误。

@apply规则兼容postCSS: https://github.com/tailwindcss/tailwindcss/issues/325

VS市场链接:https://marketplace.visualstudio.com/items?itemName=csstools.postcss

注意:从VS Code中卸载PostCSS智能感知和高亮扩展，否则它将无法工作。

我编辑了我的.vscode/settings。通过添加“css. Json”文件。Validate ": false，似乎在没有安装外部库的情况下为我工作。

https://github.com/Microsoft/vscode/issues/14999#issuecomment-258635188

2022 - 05年更新

官方的Tailwind CSS智能感知扩展现在扩展了内置的CSS语言模式来修复这些lint警告，而不会失去任何VS Code的默认智能感知功能。

查看推荐的VS代码设置部分，为工作空间中的所有CSS文件启用此功能。

如果您不想安装额外的扩展，我在下面保留了我最初的答案，但自从v0.8.0以来，它不再与内置的CSS支持冲突，因此这是我推荐的方法。

没有扩展的旧答案

Visual Studio Code允许您为CSS语言服务定义自定义数据。

例如，在工作空间的.vscode/settings中。Json，你可以添加:

{
  "css.customData": [".vscode/css_custom_data.json"]
}

然后在。vscode/css_custom_data中。json添加:

{
  "atDirectives": [
    {
      "name": "@tailwind",
      "description": "Use the @tailwind directive to insert Tailwind’s `base`, `components`, `utilities`, and `screens` styles into your CSS.",
      "references": [
        {
          "name": "Tailwind’s “Functions & Directives” documentation",
          "url": "https://tailwindcss.com/docs/functions-and-directives/#tailwind"
        }
      ]
    }
  ]
}

请注意，您可能需要重新加载VS Code窗口以获取更改。

下面是.vscode/css_custom_data的副本。Json，它包含了所有带有简短用法片段的指令(反过来在vs code中突出显示语法):

{
  "version": 1.1,
  "atDirectives": [
    {
      "name": "@tailwind",
      "description": "Use the `@tailwind` directive to insert Tailwind's `base`, `components`, `utilities` and `screens` styles into your CSS.",
      "references": [
        {
          "name": "Tailwind Documentation",
          "url": "https://tailwindcss.com/docs/functions-and-directives#tailwind"
        }
      ]
    },
    {
      "name": "@responsive",
      "description": "You can generate responsive variants of your own classes by wrapping their definitions in the `@responsive` directive:\n```css\n@responsive {\n  .alert {\n    background-color: #E53E3E;\n  }\n}\n```\n",
      "references": [
        {
          "name": "Tailwind Documentation",
          "url": "https://tailwindcss.com/docs/functions-and-directives#responsive"
        }
      ]
    },
    {
      "name": "@screen",
      "description": "The `@screen` directive allows you to create media queries that reference your breakpoints by **name** instead of duplicating their values in your own CSS:\n```css\n@screen sm {\n  /* ... */\n}\n```\n…gets transformed into this:\n```css\n@media (min-width: 640px) {\n  /* ... */\n}\n```\n",
      "references": [
        {
          "name": "Tailwind Documentation",
          "url": "https://tailwindcss.com/docs/functions-and-directives#screen"
        }
      ]
    },
    {
      "name": "@variants",
      "description": "Generate `hover`, `focus`, `active` and other **variants** of your own utilities by wrapping their definitions in the `@variants` directive:\n```css\n@variants hover, focus {\n   .btn-brand {\n    background-color: #3182CE;\n  }\n}\n```\n",
      "references": [
        {
          "name": "Tailwind Documentation",
          "url": "https://tailwindcss.com/docs/functions-and-directives#variants"
        }
      ]
    }
  ]
}

以下是结果预览:

唯一缺少的指令是@apply，因为它是在CSS属性级别声明的。CSS语言服务可能不会在属性级别上使用atRules，也不会接收这样的指令。

只需在设置中添加三行。json文件

"css.lint.unknownAtRules": "ignore",
"css.validate": true,
"scss.validate": true,

只需进入设置(ctrl +，)的快捷方式。

打开设置，搜索“未知”，第一个结果应该是你要找的:CSS > Lint: unknown At Rules:

将其更改为忽略:

完成了!干杯!

还是不明白?跟着图片走