Switch to tailwind for css styling

Could use more partials to reduce some of the current repetition (especially forms), but this is a start with everything converted.

frontend/tailwind.config.js

@@ -0,0 +1,20 @@
+const plugin = require('tailwindcss/plugin');
+
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: ['./src/**/*.rs'],
+  theme: {
+    extend: {},
+  },
+  plugins: [
+    plugin(({ addBase }) =>
+      addBase({
+        html: {
+          fontSize: '16px',
+        },
+      })
+    ),
+    require('@tailwindcss/typography'),
+    require('@tailwindcss/forms'),
+  ],
+};