test for updating content width and updating readme

assets/css/custom.css

@@ -1,10 +1,17 @@
 /* --- 1. Global Prose Rules --- */
 .article-content.prose { 
     width: 100%; 
-    max-width: 65ch; 
+    max-width: 85ch; 
     margin: 0 auto; 
 }
 
+/* Expand container width for wide elements like iframes */
+/* .article-container, 
+.article-container .container,
+main .container {
+    max-width: 95% !important;
+} */
+
 /* --- 2. Absolute Isolation Layout --- */
 .single-post-wrapper {
     display: flex;