Open the Command Palette with CMD/CTRL + SHIFT + P .
From the Command Palette, The Open Settings (JSON) command will let you directly edit the settings JSON file.
Add this VS Code config in settings.json:
"css.validate": false,
"less.validate": false,
"scss.validate": false,
"editor.formatOnSave": false,
"editor.codeActionsOnSave": {
"source.fixAll.stylelint": true
},
"files.autoSaveDelay": 500,