h1{color:#007aff;margin-bottom:20px;border-bottom:none;padding-bottom:0;font-size:24px}#app{text-align:center;max-width:400px;margin:20px auto;background-color:#fff;padding:20px;border-radius:12px;box-shadow:0 4px 6px #0000001a}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;margin:0;padding:0;background-color:#e5e5ea}.input-container{margin-bottom:20px}form{display:flex;flex-direction:column;align-items:center}input[type=number]{width:100%;max-width:300px;padding:12px;border:1px solid #007AFF;border-radius:8px;margin-bottom:10px}button{width:100%;max-width:300px;padding:12px;background-color:#007aff;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:background-color .3s}button:hover{background-color:gray}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px;border-bottom:1px solid #ccc}th button{background:none;border:none;cursor:pointer;font-weight:400;color:#fff;padding:0;margin:0}