.phone-all{position:relative;width:100%;height:100%;text-align:center;overflow:hidden}.phone-all .phone-info{margin-top:20%;margin-bottom:15px}.phone-all .strong{font-weight:bolder;font-size:30px}.phone-all .btn-item{display:block;height:44px;margin:70px 20px 0;border-radius:4px;font-size:16px;color:#fff;letter-spacing:0;text-align:center;line-height:44px;background:#00ae78}