html,body{height:100%;width:100%;margin:0;background-color:#fff}@media(prefers-color-scheme:dark){html,body{background-color:#1e1e1e}}div{display:flex;height:100%;width:100%;align-items:center;justify-content:center;flex-direction:column;gap:1em}button{width:20em;height:5em;border-radius:1em;border-style:solid;border-color:gray;font-size:24pt;background-color:#1919704d;cursor:pointer}button[disabled]{cursor:not-allowed}