doctor_app_flutter/lib/widgets/auth/known_user_login.dart

import 'package:doctor_app_flutter/config/config.dart';
import 'package:flutter/material.dart';
import 'package:hexcolor/hexcolor.dart';

class KnownUserLogin extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (ctx, constraints) {
        int maxSmallScreenSize = MAX_SMALL_SCREEN;
        bool isSmallScreen = constraints.maxWidth <= maxSmallScreenSize;
        return Column(
          mainAxisAlignment: MainAxisAlignment.start,
          children: <Widget>[
            Container(
              decoration: BoxDecoration(
                  border: Border.all(
                    color: Hexcolor('#CCCCCC'),
                  ),
                  borderRadius: BorderRadius.circular(50)),
              margin: const EdgeInsets.fromLTRB(0, 20.0, 30, 0),
              child: Row(
                children: <Widget>[
                  Container(
                      height: 100,
                      width: 100,
                      decoration: new BoxDecoration(
                        // color: Colors.green, // border color
                        shape: BoxShape.circle,
                        border: Border.all( color: Hexcolor('#CCCCCC'))
                      ),
                      child: CircleAvatar(
                        child: Image.asset(
                          'assets/images/dr_avatar.png',
                          fit: BoxFit.cover,
                        ),
                      ))
                ],
              ),
            )
          ],
        );
      },
    );
  }
}