How to ignore system font size

I want my app to ignore system font size.
I try to use plugins below but not working.

This my problem.

Ionic Native - Mobile Accessibility (ionicframework.com)

“dependencies”: {
@angular/common”: “~8.1.2”,
@angular/core”: “~8.1.2”,
@angular/forms”: “~8.1.2”,
@angular/platform-browser”: “~8.1.2”,
@angular/platform-browser-dynamic”: “~8.1.2”,
@angular/router”: “~8.1.2”,
@capacitor/android”: “^2.4.0”,
@capacitor/core”: “2.4.0”,
@ionic-native/android-permissions”: “^5.32.1”,
@ionic-native/core”: “^5.1.0”,
@ionic-native/date-picker”: “^5.17.1”,
@ionic-native/in-app-rowser”: “^5.1.0”,
@ionic-native/local-notifications”: “^5.17.1”,
@ionic-native/mobile-ccessibility”: “^4.20.0”,
@ionic-native/splash-screen”: “^5.0.0”,
@ionic-native/status-bar”: “^5.0.0”,
@ionic/angular”: “^4.7.1”,
@ionic/storage”: “^2.2.0”,
“cordova-android”: “8.1.0”,
“cordova-android-support-gradle-release”: “3.0.1”,
“cordova-ios”: “5.1.1”,
“cordova-plugin-badge”: “^0.8.8”,
“cordova-plugin-datepicker”: “0.9.3”,
“cordova-plugin-device”: “^2.0.3”,
“cordova-plugin-inappbrowser”: “^4.0.0”,
“cordova-plugin-ionic-webview”: “^5.0.0”,
“cordova-plugin-local-notification”: “0.9.0-beta.2”,
“cordova-sqlite-storage”: “3.4.0”,
“core-js”: “^2.5.4”,
“ng2-pdf-viewer”: “^6.1.2”,
“rxjs”: “^6.5.0”,
“tslib”: “^1.9.0”,
“zone.js”: “~0.9.1”
},

just used css to override it.

not working I try use px, vw may be use other i don’t know.