A month filter enables users to narrow down content by selecting a specific month. It's useful for displaying time-sensitive data, such as events, reports, or posts, that occurred within the chosen period.

**Attributes:**

**Attributes** | **Description** 
:--- | ---
```[class]``` | (Required) Specify a class for CSS styling.
```[start_year]```| (Optional) The default start year (default: current year).
```[start_month]```| (Optional) The default start month(default: current month).

**Shortcode:**

```js
[month_list]
```
**Code Example:**

```js
[month_list class="list-unstyled"]
```