Custom Card Shape Flutter SDK : <p>I just started learning Flutter and I have developed an app with GridView.
GridView items are Card.
Default card shape is Rectangle with a radius of 4.</p>

<p>I know there is shape property for Card Widget and it takes ShapeBorder class.
But I am unable to find how to use ShapeBorder class and customize my cards in GridView.</p>

<p>Thanks in Advance.</p>
