Initial commit: site code, layouts, content (images added separately)

Fixes duplicate placeholder cover image on the 3 newest blog posts,
broken aspect-ratio classes on the albums listing page, and a
non-responsive fixed sidebar on the chat page.

postcss.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    '@tailwindcss/postcss': {},
+    autoprefixer: {},
+  },
+}