I need to create a list-item structure which contains three buttons starts at bottom. What styles are required to place these buttons as displayed in the pic (The sequence of buttons doesn't matter, I just want to place 3 buttons at bottom).

Below is my CSS and HTML.

```css
li{
    border: 1px solid #ddd;
    padding: 10px;
    height: 200px;
    overflow: hidden!important;
    text-align:center;
}

.btn-custom{

}
```

```html
<ul>
    <li>
       <button type="button" class="btn-custom">Button-3</button>
       <button type="button" class="btn-custom">Button-2</button>
       <button type="button" class="btn-custom">Button-1</button>
    </li>
</ul>
```

[![enter image description here](https://i.stack.imgur.com/6t9X0.png)](https://i.stack.imgur.com/6t9X0.png)