Background image isn't showing at div class

ionic-v1
1

hi all,

I am working on android project with ionic framework.
I have www\templates\home.html in which I am using images for item icon.

my view code home.html

<ion-content>
  <div class="row gray">
     <div class="col"><div class="abc"></div>
     Opening Balance</div>
  </div>
</ion-content>

my css in style.css:

.abc{
     background: url('../img/icon.png');
}

Anyone have any suggestions?
Thanks in advance