html,body{height:100%}#layer_board_area{position:absolute}* html .layer_board_bg,* html .layer_board{position:absolute}.layer_board_bg{position:fixed;width:100%;height:100%;z-index:1000;top:0;left:0;display:none;cursor:pointer;background:#000}.layer_board{display:none;position:fixed;margin:50px auto 0 auto;text-align:center;z-index:999999999;max-width:800px;left:0;right:0}@media screen and (max-width:900px){.layer_board{max-width:90%}.layer_board div a img{max-width:100%}}@media screen and (orientation:landscape){.layer_board{max-width:50%;margin:10px auto 0 auto}.layer_board div a img{max-width:100%}}.layer_board .btn_close{max-width:63px;margin:30px auto}@media screen and (max-width:900px){.layer_board .btn_close{margin:10px auto}}