Haw do i change the font size of all pages using ion-range in ionic 4

@kawarien wrote:

Hello,

How can i change font size of all pages using ion-range. this code work only in my home page
home.component.html

<ion-range min="1" max="6" snaps="true" [(ngModel)]="fontSize"> </ion-range>

home.component.ts

fontSize: number;

thank in advance for your help

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