diff --git a/docs/src/about_guide.md b/docs/src/about_guide.md
index 426d659a0..f22e201be 100644
--- a/docs/src/about_guide.md
+++ b/docs/src/about_guide.md
@@ -12,17 +12,17 @@ Type | Or | … to Get
 --- | --- | ---
 \*Italic\* | \_Italic\_  | _Italic_ 
 \*\*Bold\*\* | \_\_Bold\_\_ | **Bold** 
-\# Heading 1 | Heading 1 <br> ========= | # Heading 1
-\## Heading 2 | Heading 2 <br>--------- | ## Heading 2
+\# Heading 1 | Heading 1 <br> ========= | <h4>Heading 1</h4>
+\## Heading 2 | Heading 2 <br>--------- | <h5>Heading 2</h5>
 \[Link\](http://a.com) | \[Link\]\[1\]<br>⋮ <br>\[1\]: http://b.org | [Link](https://commonmark.org/) 
 !\[Image\](http://url/a.png) | !\[Image\]\[1\]<br>⋮ <br>\[1\]: http://url/b.jpg | ![Markdown](https://commonmark.org/help/images/favicon.png) 
-\> Blockquote | | > Blockquote
+\> Blockquote | | <blockquote>Blockquote</blockquote>
 \* List <br>\* List <br>\* List | \- List <br>\- List <br>\- List <br> | *   List <br>*   List <br>*   List <br>
 1\. One <br>2\. Two <br>3\. Three | 1) One<br>2) Two<br>3) Three | 1.  One<br>2.  Two<br>3.  Three
-Horizontal Rule <br>\--- | Horizontal Rule<br>\*\*\* | Horizontal Rule  <br>* * *
+Horizontal Rule <br>\--- | Horizontal Rule<br>\*\*\* | Horizontal Rule  <br><hr>
 \`Inline code\` with backticks | |`Inline code` with backticks 
 \`\`\`<br>\# code block <br>print '3 backticks or'<br>print 'indent 4 spaces' <br>\`\`\` | ····\# code block<br>····print '3 backticks or'<br>····print 'indent 4 spaces' | \# code block <br>print '3 backticks or'<br>print 'indent 4 spaces'
-::: spoiler hidden stuff<br>*a bunch of spoilers here*<br>::: | | <details><summary> hidden stuff </summary><p><em>a bunch of spoilers here</em></p></details>
+::: spoiler hidden or nsfw stuff<br>*a bunch of spoilers here*<br>::: | | <details><summary> hidden or nsfw stuff </summary><p><em>a bunch of spoilers here</em></p></details>
 
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