rounded corners on feature grid

when using the feature grid block, the background border radius is only being applied to the bottom corners, how can I apply it to the top corners as well?

screenshot: https://scontent-lhr8-1.xx.fbcdn.net/v/t39.30808-6/237997615_10159758060222244_8293728469374609888_n.jpg?_nc_cat=103&ccb=1-5&_nc_sid=666b5a&_nc_ohc=Vufk7MhkZ8YAX-9BZIN&_nc_ht=scontent-lhr8-1.xx&oh=6ac0a54e026e6675e505292ffcefdfe2&oe=61248591