feat: support wide and full page modes (#69)

* feat: add page width config and partial

* feat: use page-width partial in layouts

* chore: revert changes in navbar and footer

* feat: customize footer width from site config

* chore: update styles

* docs: add page width

* feat: allow overriding navbar width

* fix: navbar width variable

* docs: add instruction for navbar and footer

tailwind.config.js

@@ -14,6 +14,11 @@ module.exports = {
   content: [
     './**/hugo_stats.json',
   ],
+  safelist: [
+    'max-w-screen-xl',
+    'max-w-[90rem]',
+    'max-w-full'
+  ],
   theme: {
     screens: {
       sm: '640px',