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Container(
decoration: BoxDecoration(
border: Border.all(
color: Colors.black,
width: 2.0,
),
),
child: YourWidget(),
)
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Container(
margin: const EdgeInsets.all(15.0),
padding: const EdgeInsets.all(3.0),
decoration: BoxDecoration(
border: Border.all(color: Colors.blueAccent)
),
child: Text('My Awesome Border'),
)
// Learn more inside sideguide.dev/courses/flutter?ref=grepper
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const Border(
{BorderSide top: BorderSide.none,
BorderSide right: BorderSide.none,
BorderSide bottom: BorderSide.none,
BorderSide left: BorderSide.none}
)