Widget _buildEmailFieldSignIn(BuildContext context) {
    return Container(
      width: 320.0 ,
      margin: EdgeInsets.only(bottom: 30.0),
      padding: EdgeInsets.only(top:15.0,left:15.0, right:15.0),
      color: GraphicsSettings.loginPageTextFieldBgColor,
      child:  TextFormField(
        textInputAction: TextInputAction.next,
        onFieldSubmitted: (v){
          FocusScope.of(context).requestFocus(myFocusNodePasswordLogin);
        },
        validator: (val) {
          if (!EmailValidator.validate(val, true)) {
            return Localization.of(context).trans('login_form_message_email_not_valid');
          }
          if (val.isEmpty) {
            return Localization.of(context).trans('login_form_message_email_mandatory');
          }
          return null;
        },
        onSaved: (String val) {
          _email = val;
        },
        focusNode: myFocusNodeEmailLogin,
        controller: loginEmailController,
        keyboardType: TextInputType.emailAddress,
        style: TextStyle(
          fontFamily: 'SF-Pro-Display',
          fontSize: 17.0,
          color: GraphicsSettings.loginPageTextFieldLabelColor,
          backgroundColor: GraphicsSettings.loginPageTextFieldBgColor,
        ),
        decoration: InputDecoration(
          border: InputBorder.none,
          contentPadding: EdgeInsets.only(top:1.0),
          icon: Icon(
            FontAwesomeIcons.envelope,
            color: GraphicsSettings.loginPageTextFieldIconColor,
            size: 22.0,
          ),
          hintText: Localization.of(context).trans('login_email'),
          hintStyle: TextStyle(
              fontFamily: 'SF-Pro-Display',
              fontSize: 17.0,
              color: GraphicsSettings.loginPageTextFieldLabelColor
          ),
          helperText: "",
          helperStyle: TextStyle(
              fontFamily: 'SF-Pro-Display',
              fontSize: 14.0,
              fontWeight: FontWeight.bold
          ),
          errorStyle: TextStyle(
              fontFamily: 'SF-Pro-Display',
              fontSize: 14.0,
              fontWeight: FontWeight.bold
          ),

        ),
      ),
    );
  }