.margin_box {
    margin:10px;
   }
 
   .panel-heading{
     background-color: #ebebeb;
     color: #919191;
     font-size: 16px;
     font-weight: bold;
     padding: 10px;
     width: 100%;
   }
   .container .plus_sign {
     text-align: center;
 }
 .bundle_quantity {
     background-color: #ee3313;
     border-radius: 50%;
     color: #fff;
     font-size: 14px;
     font-weight: bold;
     height: 34px;
     left: -2px;
     line-height: 34px;
     padding: 0;
     position: absolute;
     text-align: center;
     top: -5px;
     width: 34px;
     z-index: 99;
 }
 @media screen and (max-width: 767px) and (min-width: 360px) { 
   .product-thumb {
     width:auto;
     min-height: auto;
   }
 
 }
 
 @media screen and (max-width: 319px) and (min-width: 1px) { 
   .product-thumb .text-center h4 {
       font-size:10px;
   }
}