#### 主题
内建了两套主题 `light|dark`，默认 `light`。
#### Menu Themes
There are two built-in themes: 'light' and 'dark'. The default value is 'light'.
```html
Navigation One
Navigation Two
Navigation Three
Option 3
Option 4
Option 5
Option 6
Navigation Four
Option 7
Option 8
Option 9
Option 10
```