Markdown 语法速查

# H1
## H2
### H3

**bold** and *italic* and ~~strike~~

[Markdown Tools](https://example.com)

![alt text](https://example.com/a.png)

- Item 1
- Item 2
  - Nested

1. First
2. Second

> Markdown is lightweight.

Inline `code`

```js
console.log("hi");
```

| Name | Age |
| --- | ---: |
| Alice | 25 |

- [x] Done
- [ ] Todo

above

---

below

\*not italic\*