Take the page heading from the Markdown body, not a separate <h1>

Elternbeirat.Web/Features/Posts/PostDetail.razor.css

@@ -1,13 +1,7 @@
 .post-meta {
-    display: flex;
-    justify-content: space-between;
-    align-items: baseline;
-    gap: 1rem;
-    margin-bottom: 1rem;
-}
-
-.post-meta time {
     display: block;
     color: var(--color-text-soft);   /* token, so it adapts in dark mode */
     font-size: 0.85rem;
+    margin-top: 1.5rem;              /* space from the "all posts" link above */
+    margin-bottom: 0.25rem;         /* keep the body close below */
 }