h1{color:#fff}.falling{animation:fall ease-in-out 3s infinite;position:absolute;top:0;z-index:5;font-size:40px}input{font-size:16px;padding:10px 15px;border-radius:5px;margin-right:10px;border:1px solid #d9dde1}input:active,button:active,input:focus,button:focus{outline:1px solid #ccc}button{background:rgb(10,201,344);border:none;cursor:pointer;color:#fff;padding:7px 30px;border-radius:5px;font-size:20px}span{display:none;color:red;font-size:20px}@keyframes fall{0%{transform:translateY(0)}to{transform:translateY(90vh)}}