Tailwindcss Intellisense not working in VS Code

I have checked out many answers from Stack Overflow but I wasn't able to fix the issue that IntelliSense not working for Tailwindcss. But vscode Intellisense working for other things like python and javascript. Please anybody help me why this isn't working. I am using Tailwindcss Cli. even CSS file Intellisense also not working.

my config file is. tailwind.config.js

module.exports = {
  content: ["./src/**/*.{html,js}"],
  theme: {
    extend: {},
  },
  plugins: [],
}

I also added this setting into .vscode/settings.json

{
"css.validate": false,
"liveServer.settings.port": 5501,
"tailwindCSS.emmetCompletions": true,
"tailwindCSS.includeLanguages": {
  "plaintext": "html",
  "javascript":"javascript"  
},
"editor.quickSuggestions": {
    "other": true,
    "comments": true,
    "strings": true
},
"tailwindCSS.classAttributes": [
    "class",
    "className",
    "ngClass"
]}

once a thing. CSS compiled successfully but Intellisense not working. and this is my project folder structure. please anybody help me, please.

I think you almost got it... i added this to my settings and it worked.
what you are missing (in my opinion) is "inlineSuggest" - full snippet here:

"editor.quickSuggestions": {
   "strings": true
},
"css.validate": false,
"editor.inlineSuggest.enabled": true