*,html{margin:0;padding:0}body{justify-content:center;align-items:center;height:100vh;display:flex}button{cursor:pointer;border:none;border-radius:4px;font-size:4vh}.grid-container{grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);gap:4px;width:512px;height:512px;padding:2rem;display:grid}