.bmt_cart {       
    display: none;
    position: fixed;
    width: 100%;                                         
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1;
    }           

.bmt_cartframe {   
    width: 100%;
    height: 100%;    
    border-style: none;
    }                          

.bmt_progressindicator {
    position: absolute;    
    top: 50%;           
    left: 50%;          
    width: 126px;       
    height: 126px;      
    margin-left: -63px; 
    margin-top: -63px;  
    background-image: url("https://secure.bmtmicro.com/ShoppingCart/loading.gif");
    background-repeat: no-repeat;
    }