Add Contact Page and Update Navigation Links

- Updated navigation links across multiple blog pages to replace "Index" with "Home" and added "Contact" link.
- Created a new contact page with a form for user inquiries.
- Added a new contact template to render the contact page content.
- Updated blog index page to enhance structure and styling.
- Added a contact markdown file for content management.

css/base.css

@@ -17,14 +17,16 @@ header#site_head {
   @apply py-4 px-60;
 
   nav ul {
-    @apply flex space-x-4 justify-end-safe;
+    @apply flex space-x-4 justify-end-safe prose-a:text-white;
   }
 }
 
 main {
-  @apply prose container mx-auto px-4 py-8 max-w-5xl;
+  article, div.main {
+    @apply prose container mx-auto px-4 py-8 max-w-5xl;
+  }
 }
 
 footer#site_foot {
-  @apply bg-secondary text-white text-center;
+  @apply bg-secondary text-white text-center m-0 p-0;
 }