body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    margin: 0;
}

.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    margin-right: 10px;
}

.input-group select {
    padding: 5px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
}

button:hover {
    background: #0056b3;
}

.output-group {
    margin-top: 20px;
}

.output-group h2 {
    font-size: 24px;
    color: #007bff;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 8px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
}