html{scroll-behavior:smooth}body{margin:0;background:#fff}*{box-sizing:border-box}img{display:block}::selection{background:#111;color:#fff}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#888}::-webkit-scrollbar-thumb:hover{background:#555}