body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.form-container {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 500px;
    margin-top: 30px;
}
.form-group {
    margin-bottom: 15px;
}
select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 300px;
}
h2 {
    color: #333;
    margin: 20px 0;
    text-align: center;
}
.table-container {
    margin-top: 20px;
    width: 80%;
}
table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
th, td {
    padding: 10px;
    text-align: center;
    vertical-align: middle;
    border: 1px solid #ddd;
    width: 25%;
}
th {
    background-color: #f2f2f2;
}
tr:nth-child(even) {
    background-color: #f9f9f9;
}
.no-data {
    color: #888;
    text-align: center;
    vertical-align: middle;
}