Widget _signInButton() { return OutlineButton( splashColor: Colors.grey, onPressed: () {}, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(40)), highlightElevation: 0, borderSide: BorderSide(color: Colors.grey), child: Padding( padding: const EdgeInsets.fromLTRB(0, 10, 0, 10), child: Row( mainAxisSize: MainAxisSize.min, mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Image(image: AssetImage("assets/google_logo.png"), height: 35.0), Padding( padding: const EdgeInsets.only(left: 10), child: Text( 'Sign in with Google', style: TextStyle( fontSize: 20, color: Colors.grey, ), ), ) ], ), ), ); }