body{background:rgba(0,0,0,0.7);padding-top:50px}@media only screen and (min-width: 768px) and (max-width: 1024px){body{padding-top:40px}}@media only screen and (max-width: 767px){body{padding-top:30px}}#header,#footer{display:none}#container{background:transparent}.mask_first_time{display:none}.con_popup_first_time{display:block;margin:0 auto;position:static}.con_popup_first_time .btn_close{display:none}