Markdown features

# Heading 1
## Heading 2
### Heading 3
#### Heading 4
##### Heading 5
###### Heading 6

This is the first paragraph.

This is the second paragraph.

*Italic text* or _italic text_
**Bold text** or __bold text__
***Bold and italic*** or ___bold and italic___

- Item one
- Item two
- Item three

1. First item
2. Second item
3. Third item

[Link text](https://example.com)
[Link with title](https://example.com "Title text")

[The Economist's OpenFuture Initiative](https://www.economist.com/openfuture)

![Alt text](image.jpg)
![Alt text with title](image.jpg "Image title")

> This is a blockquote.
> It can span multiple lines.

> **Q: Do the benefits of artificial intelligence outweigh the risks?**

*The late physicist Stephen Hawking warned that artificial intelligence (AI) was "either the best or the worst thing ever to happen to humanity".*

Use the `code` function to execute.

```
Code block without syntax highlighting
```

```javascript
function hello() {
  console.log("Hello, world!");
}
```

---
***
___

{{< figure src="image.jpg" title="Figure title" >}}

{{< youtube VIDEO_ID >}}

{{< tweet user="username" id="tweet_id" >}}

This is the summary of your post.

<!--more-->

This is the rest of your post content.

```python
def hello_world():
    print("Hello, world!")
```