*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,微软雅黑,sans-serif}body{background-color:#f5f7fa;padding-top:10px;padding-bottom:10px}a{color:#000;text-decoration:none}a:hover{color:#2272db;text-decoration:underline}#app{max-width:1200px;margin:0 auto;background:#fff;border-radius:8px;box-shadow:0 2px 12px #00000014;padding:24px}@media print{#app{padding:0;box-shadow:none}}