Organizing information with collapsed sections

You can streamline your Markdown by creating a collapsed section with the <details> tag.

Creating a collapsed section

You can temporarily obscure sections of your Markdown by creating a collapsed section that the reader can choose to expand. For example, when you want to include technical details in an issue comment that may not be relevant or interesting to every reader, you can put those details in a collapsed section.

Any Markdown within the <details> block will be collapsed until the reader clicks to expand the details. Within the <details> block, use the <summary> tag to create a label to the right of .

<details><summary>CLICK ME</summary>

#### We can hide anything, even code!

      puts "Hello World"

</details> ```</p>

The Markdown will be collapsed by default.

![Rendered collapsed](/assets/images/help/writing/collapsed-section-view.png)

After a reader clicks <svg version="1.1" width="16" height="16" viewBox="0 0 16 16" class="octicon octicon-triangle-right" aria-label="The right triange icon" role="img"><path d="M6.427 4.427l3.396 3.396a.25.25 0 010 .354l-3.396 3.396A.25.25 0 016 11.396V4.604a.25.25 0 01.427-.177z"></path></svg>, the details are expanded.

![Rendered open](/assets/images/help/writing/open-collapsed-section.png)

## 延伸阅读

- [GitHub Flavored Markdown 规格](
- "[基本撰写和格式语法](/articles/basic-writing-and-formatting-syntax)"




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