diff --git a/components/PrismMac.js b/components/PrismMac.js
index 2eac2a40..731060b6 100644
--- a/components/PrismMac.js
+++ b/components/PrismMac.js
@@ -70,7 +70,7 @@ const renderMermaid = async() => {
       }
     }
   })
-  observer.observe(document.querySelector('#container'), { attributes: true, subtree: true })
+  observer.observe(document.querySelector('#notion-article'), { attributes: true, subtree: true })
 }
 
 function renderPrismMac() {
diff --git a/themes/nobelium/LayoutSlug.js b/themes/nobelium/LayoutSlug.js
index ea2cfb3a..4a98a641 100644
--- a/themes/nobelium/LayoutSlug.js
+++ b/themes/nobelium/LayoutSlug.js
@@ -19,13 +19,13 @@ export const LayoutSlug = props => {
                 {lock && <ArticleLock validPassword={validPassword} />}
 
                 {!lock && <div id="notion-article" className="px-2">
-                    {post && <>
+                    <>
                         <ArticleInfo post={post} />
                         <NotionPage post={post} />
                         <ShareBar post={post} />
                         <Comment frontMatter={post}/>
                         <ArticleFooter />
-                    </>}
+                    </>
                 </div>}
 
         </LayoutBase>