#bue_one_book_window{position:fixed;top:0;left:0;right:0;bottom:0;width:650px;height:550px;margin:auto;padding:10px;background-color:#f7f7f7;z-index:999}#bue_one_book_window div.content{margin:auto 20px 20px;height:100px}.btn_adult{color:#fff;font-size:18px;border:0px;padding:10px 30px;cursor:pointer;white-space:pre-line}.btn_adult.red{background-color:#da251c}.btn_adult.red:hover{background-color:#ea5048}.btn_adult.blue{background-color:#5bbdcb}.btn_adult.blue:hover{background-color:#86d6e1}.content.btn_box{display:flex;justify-content:space-around}@media only screen and (max-width: 640px){#bue_one_book_window{width:90%;height:556px;background-color:#f7f7f7}#bue_one_book_window div.description{width:100%;margin:auto auto 20px;height:100px}}