A Container can take a BoxDecoration
(going off of the code you had originally posted) which takes a boxShadow
:
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
spreadRadius: 5,
blurRadius: 7,
offset: Offset(0, 3), // changes position of shadow
),
],
),