.page-index .w-1920{width:1920px}.page-index .main img{display:block}.page-index .back-top-btn{position:absolute;left:399px;top:359px;width:361px;height:57px;padding:0;border:0;background:transparent;cursor:pointer}.page-index .back-top-btn-report{top:427px;height:63px}