*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{display:flex;flex-direction:column;align-items:center;background:#f0f0f0;font-family:Arial,sans-serif}canvas{border:2px solid #333;background:linear-gradient(#87ceeb,#e0f7fa)}