Styling of ion-side-menu-content

I want to add css styles to my login page. The application works as:

• ion-side-menus where is:

  ion-side-menu-content inside of it is:

  ion-nav-view name="content"
  

Controller looks like:

        .state('myapp.login', {
            url  : "/login",
            views: {
                'content': {
                    templateUrl: "myApp-core.login.html",
                    controller : 'LoginController'
                }
            }
        })

The problem is that when I changed a main css it causes on all sub pages but I want to change only my login page (myApp-core.login.html). Thanks for any help.