.enterbtn{border-radius:.43rem;border:none;position:absolute;bottom:1.1rem;left:50%;width:4.4rem;height:.88rem;background:#ad8e0a;font-size:.36rem;color:#fff;line-height:.88rem;text-align:center;margin-left:-2.2rem;animation:bottom-ripple 1.2s ease-in-out infinite}.enterbtn:active{transition:background-color .2s;background-color:#b69e34}.enterbtn:focus{outline:none}@keyframes bottom-ripple{0%{transform:scale(1)}50%{transform:scale(1.06)}}