html,body,app-root{height:100%}body{margin:0}h1{text-align:center;flex-shrink:0}.btn{display:inline-block;padding:1rem 1.4rem;font-size:1.05rem;border:3px solid #333333;border-radius:8px;text-decoration:none;color:#222;background:#fff}.btn:hover{border-color:#1976d2;color:#1976d2}app-board-model{aspect-ratio:1/1}