Css does not work in cordova emulator

ionic-v1
1

I wrote one css class for grid it works fine in browser but when i ran it i coredova emulator grid does not work

this is my css

.wrapper {
display:grid;
height:630px;
width:360px;
grid-template-columns:160px 160px;
grid-template-rows:200px 200px;
grid-gap:0px ;

            background-color:#0096D5;
            margin-top:47px;

           /*  color: #444; */
          }
          
          .box_con {
             /* display:block; 
            position:absolute;   */
            background:url(../img/conflict_4.png); 
           /*  background-color:red;  */
             width:160px;
            height:160px; 
           
           /*  left:75px;
            bottom:110px; */
           /*  background-repeat:no-repeat; 
            background-size:cover; */
          }
       
          .box_confi {
            /*  display:block; 
            position:absolute;   */
            background:url(../img/confidential_4.png);  
             background-color:red; 
             width:160px;
            height:160px; 
           
           /*  left:75px;
            bottom:110px;*/
           /*  background-repeat:no-repeat; 
            background-size: cover; */
          }

this is my html

    </div>
   <div class="box_confi b"></div>
   <div class="box_privacy c"></div>
   <div class="box_global d"></div>
   <div class="box_anticoruption e"></div>
   <div class="box_standard f">F</div>    
 </div> 
 
</ion-content>