how to set background image in ionic?

I am trying to set my background image on my first view could you please tell me why my background image not display .I want to display background image on my view .i tried to use css but not work here is my code http://ift.tt/1bG9RFe

  .test {
     border: 1px solid red;
     position: relative!important;

background: url('http://ift.tt/1D5DP01');
    }