Flutter AppBar Icon is not responsive on all screens

i Have two icons on my appbar on clicking save save icon dissappers and approve icon will pop it works fine but by app bar icon on larger screen cut according to below image. here is mycode

appBar: PreferredSize(
      preferredSize:  Size.fromHeight(70.0),
      child: AppBar(
      elevation: 10,
      automaticallyImplyLeading: false,
      backgroundColor: Colors.red,
        title:  Text('Edit',style:
              TextStyle(fontSize: MediaQuery.of(context).size.width*0.1),
        ),

        actions: <Widget>[
          isVisibile
              ?  Container(
            height: 50,
                width: 50,
                child: Padding(
                  padding:  EdgeInsets.only(right:MediaQuery.of(context).size.width*0.3),
                  child: IconButton(
                        icon:  Icon(
                            Icons.save,
                            color: Colors.white,
                            size: MediaQuery.of(context).size.width*0.1,
                          ),

                        onPressed: () {
                          
                        },
                      ),
                ),
              )

              : Container(),
          isInvisible
              ? Padding(
                padding: EdgeInsets.only(right:MediaQuery.of(context).size.width*0.05,bottom: MediaQuery.of(context).size.height*0.05),
                child: IconButton(
                    icon: Icon(
                      Icons.done,
                      color: Colors.white,
                      size: MediaQuery.of(context).size.width*0.1,
                    ),
                    onPressed: () async {
                      // approve
                    },
                  ),
              )
              : Container(),
        ],
      //),
      ),
    ),

here is my app bar on large screens here is my image on small screen

so how can i make icons responsive thanks