page layout-2

lib/main.dart

@@ -30,7 +30,37 @@ class _MyHomePageState extends State<MyHomePage> {
       appBar: AppBar(
         title: Text(widget.title),
       ),
-      body: Container(),
+      body: Container(
+        margin: EdgeInsets.all(20),
+        padding: EdgeInsets.symmetric(vertical: 20, horizontal: 20),
+        child: Center(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.start,
+            children: [
+              Container(
+                width: 200,
+                height: 100,
+                decoration: BoxDecoration(
+                  border: Border.all(color: Colors.black, width: 2),
+                ),
+                child: Text('text in box'),
+              ),
+              Text('text outside of box'),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.start,
+                children: [
+                  Text('text in Row'),
+                  Container(
+                    width: 100,
+                    height: 100,
+                    child: Icon(Icons.flag),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
     );
   }
 }
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