Headers

Use # for headers:

# H1 Header
## H2 Header
### H3 Header

Emphasis

*Italic text*
**Bold text**
***Bold and italic***

Lists

- Unordered item
  - Nested item
- Another item

1. Ordered item
2. Second item
   1. Nested ordered item

Links and Images

[Link text](https://example.com)
![Alt text](image_url)

Code

Inline code and code blocks:

`Inline code`

```language
// Code block
console.log('Hello, world!');
```

Blockquotes

Create blockquotes:

> This is a blockquote.

Horizontal Rule

Add a horizontal rule:

---

Tables

Create tables:

| Column 1 | Column 2 |
| -------- | -------- |
| Row 1    | Data     |
| Row 2    | Data     |