title: The function 'Sizedbox' isn't defined
body: <p>The function 'Sizedbox' isn't defined. [![enter image description here][1]][1]
  WANT TO KNOW HOW TO DEFINE FUNCTION PROPERLY WITHOUT ERRORS.0
  I am new to flutter and I am learning flutter from youtube I'm trying to create a login UI in android studio. but I'm stuck with this error for a long time. can anyone please help</p>
  <pre><code>import 'package:flutter/cupertino.dart';
  import 'package:flutter/material.dart';
  import'package:flutter/services.dart';
  
  
  class LoginScreen extends StatefulWidget {
  
  
  @override
    _LoginScreenState createState() =&gt; _LoginScreenState();
    }
  
  Widget buildEmail(){
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: &lt;Widget&gt;[
        Text(
          'Email',
          style: TextStyle(
            color: Colors.white,
            fontSize: 16,
            fontWeight: FontWeight.bold
  
          ),
        ),
  
       Sizedbox (height:10),
        Container(
          alignment: Alignment.centerLeft,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(10),
            boxShadow: [
              BoxShadow(
                color:Colors.black26,
                blurRadius: 6,
                offset :Offset(0,2)
  
              )
            ]
  
          ),
          height:60,
          child: TextField(
            keyboardType: TextInputType.emailAddress,
  
          )
  
  
        )
      ]
  
    );
  }
  
  
  
  
  
           class _LoginScreenState extends State &lt;LoginScreen&gt; {
  
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        body: AnnotatedRegion&lt;SystemUiOverlayStyle&gt; (
          value: SystemUiOverlayStyle.light,
          child: GestureDetector(
            child: Stack(
              children: &lt;Widget&gt;[
                Container(
                  height: double.infinity,
                  width: double.infinity,
                  decoration: BoxDecoration(
                    gradient: LinearGradient(
                      begin: Alignment.topCenter,
                      end: Alignment.bottomCenter,
                      colors:[
                        Color(0x665ac18e),
                        Color(0x995ac18e),
                        Color(0xcc5ac18e),
                        Color(0xff5ac18e),
                      ]
                    )
                  ),
  
                  child:Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: &lt;Widget&gt;[
                      Text(
                        'Sign In',
                        style: TextStyle(
                              color: Colors.white,
                          fontSize: 40,
                          fontWeight: FontWeight.bold
  
                        ),
                      ),
  
                      SizedBox(height: 50),
                      buildEmail(),
  
                    ],
                  )
                )
              ],
            ),
          ),
        ),
      );
    }
  }
  </code></pre>