.btl_loading{background-color: rgba(0, 0, 0, 0.6);display: none;width: 100%;height: 100%;position: fixed;top: 0;left: 0;z-index: 10000;}
.btl_loading>div{display: table;width: 100%;height: 100%;position: absolute;top: 0;left: 0;right: 0;bottom: 0;}
.btl_loading>div>div{display: table-cell;text-align: center;vertical-align: middle;}
.btl_loading img{width: 54px;height: 55px;padding: 0;}