html,body{background-color:#f8f8f8;height:100%;margin:0;font-family:sans-serif}#app{width:100vw;height:100vh}main{flex-direction:column;justify-content:center;align-items:center;height:100%;display:flex}button{cursor:pointer;background:0 0;border:none;padding:15px 32px;font-size:32px}