How i can get a resolution my screen phone in percent %

i try use % like css but dont work

how i can get the resolution for diferent phones

ion-scroll zooming=“true” direction=“y” style=“width: 10%;height:10%;margin:auto;” /ion-croll

Sorry, but your question don’t make any sense.

First read this forum post: Help us help you

Then show us what have you done so far and what do you expect of us. Use example template found in a mentioned forum post.