.bg_wrap{background:url(/openPlatform/top_bg.png) top/1238px 333px no-repeat,url(/openPlatform/topbg_bg.png) top/1920px 430px no-repeat,url(/openPlatform/top_1_bg1.png) bottom 2370px center/1920px 790px no-repeat,url(/openPlatform/bgt-03.png) bottom 1580px center/1920px 790px no-repeat,url(/openPlatform/bgt-04.png) bottom 790px center/1920px 790px no-repeat,url(/openPlatform/bgt-05.png) bottom/1920px 790px no-repeat}.contain_op_wrap{background:hsla(0,0%,85%,.1)!important;box-shadow:0 2px 4px 0 rgba(0,0,0,.5);border-radius:4px;min-height:100vh;padding-bottom:80px;margin-bottom:40px}.bs_gird_wrap{justify-items:center}