.d-none
    {
    display: none;
    }
    
.b-loading
    {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    overflow: hidden;
    background: url("../images/common/ajax-loader.gif") #000 center center no-repeat;
    opacity: 0.5;
    }