body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    text-align: center;
}
.container {
    background: white;
    padding: 20px;
    max-width: 400px;
    margin: 50px auto;
    box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}
h1 {
    color: #007bff;
    font-size: 22px;
}
label {
    font-weight: bold;
    display: block;
    margin-top: 10px;
    font-size: 14px;
}
select, input {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}
button {
    background: #007bff;
    color: white;
    padding: 12px;
    border: none;
    width: 100%;
    cursor: pointer;
    margin-top: 15px;
    font-size: 16px;
    border-radius: 5px;
}
button:hover {
    background: #0056b3;
}
#result {
    font-size: 16px;
    font-weight: bold;
    margin-top: 15px;
    color: #333;
    background: #e9ecef;
    padding: 10px;
    border-radius: 5px;
}