How can I add a rounded border for only 3 sides of the box? It's giving me errors if i add an "only" per sides if there is a border radius included.

[![enter image description here](https://i.stack.imgur.com/diI9J.png)](https://i.stack.imgur.com/diI9J.png)

this is my Code

```
Container(
  padding: const EdgeInsets.all(10.0),
  decoration: BoxDecoration(
    border: Border.all(color:Colors.grey, width: 2.5),
    borderRadius: BorderRadius.circular(13.0),
  ),
  child: child,
)

```