refactor: 移除tailwind

Former-commit-id: 7c0ed60b

postcss.config.js

-module.exports = {
-  plugins: {
-    tailwindcss: {},
-    autoprefixer: {},
-  },
-}

tailwind.config.js

-/** @type {import('tailwindcss').Config} */
-module.exports = {
-  purge: ['./index.html', './src/**/*.{vue,js,ts,jsx,tsx}'],
-  darkMode: 'class',
-  theme: {
-
-    backgroundColor: theme => ({
-      ...theme('colors'),
-      "sidebar-logo":'#2b2f3a'
-    })
-  },
-  plugins: [],
-
-
-}