Add remaining frontend config files

.env

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+REACT_APP_API_BASE_URL=http://192.168.0.10:8000
+

postcss.config.js

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

tailwind.config.js

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+// tailwind.config.js
+module.exports = {
+  content: [
+    "./src/**/*.{js,jsx,ts,tsx}", // Make sure this path is accurate
+  ],
+  theme: {
+    extend: {
+      fontFamily: {
+        sans: ['Poppins', 'sans-serif'],
+      },
+      colors: {
+        lcepl: {
+          blue: '#1E3A8A',
+          gray: '#374151',
+          orange: '#F97316',
+          light: '#F9FAFB',
+        },
+      },
+    },
+  },
+  plugins: [],
+};