/* Big Tablet to 1200px (width smaller than 1140px row */

 .row_chi{
         height:155px;
     }

@media only screen and (max-width: 559px) {
    .row_chi{
         height:258px;
     } 
    .div_chi{
        height:120px;        
    }
    .div_chi2{
        height:60px;
    }
}