Style editor Markdown with .markdown-body and add ::: design blocks

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Elternbeirat.Web/Features/Faqs/FaqList.razor

@@ -12,7 +12,7 @@
 
 @if (_page is not null && !string.IsNullOrWhiteSpace(_page.Body))
 {
-    <article>@Body</article>
+    <article class="markdown-body">@Body</article>
 }
 
 @if (_unavailable)
@@ -31,13 +31,13 @@ else
             <summary>@topic.Title</summary>
             @if (!string.IsNullOrWhiteSpace(topic.Intro))
             {
-                <div class="faq-topic-intro">@((MarkupString)Markdown.ToHtml(topic.Intro))</div>
+                <div class="faq-topic-intro markdown-body">@((MarkupString)Markdown.ToHtml(topic.Intro))</div>
             }
             @foreach (var faq in topic.Faqs)
             {
                 <details class="faq-item">
                     <summary>@faq.Question</summary>
-                    <div class="faq-answer">
+                    <div class="faq-answer markdown-body">
                         @((MarkupString)Markdown.ToHtml(faq.Answer))
                     </div>
                 </details>