body {
    background-color: #f9f9f9;
}
.container {
    max-width: 700px;
    margin-top: 50px;
}
.result-box {
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    text-align: center;
}
.table th, .table td {
    text-align: center;
}