Widget child; // required
double blurRadius; // default: 10.0
double borderRadius; // default: 0.0
Offset offset; // default: Offset(0.0, 8.0)
double opacity; // default: 1.0
double spread; // default: 1.0

DropShadow(
  child: Image.network(
    'https://images.pexels.com/photos/1191639/pexels-photo-1191639.jpeg',
    width: 250,
  ),
);