body {
    font-family: Arial, sans-serif;
    background-color: #eef2f3;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 400px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

h2 {
    margin-top: 20px;
    color: #555;
}

input,
select,
button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

input:focus,
select:focus,
button:focus {
    outline: none;
    border-color: #007bff;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

#result {
    padding: 10px;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
    font-size: 18px;
    color: #333;
}