.back[data-v-64eb6d74]{position:absolute;top:20px;left:40px;width:71px;height:30px;background:#1c2d4d;border-radius:2px;border:2px solid #537bc6;font-size:13px;font-family:PingFang SC-Medium,PingFang SC;font-weight:500;color:#fff;line-height:28px;text-align:center;margin-left:40px;cursor:pointer;z-index:999}