Full screen background for page in ionic

I want the entire page to have a particular background image.This is how I tried to achieve this :

    .bgimg {
     background-image : url('assets/dexter locked.png');
     background-repeat: no-repeat

   <ion-content padding class="bgimg">


But when I run the app the background image doesn’t take the dimensions of the entire screen. How can I make the image take the length and width of the entire screen ?

Is this what you are looking for?