body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f9;
}

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

form {
    margin: 0 auto;
    max-width: 400px;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
    font-weight: bold;
    color: #555;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button.btn {
    display: inline-block;
    width: 100px;
    margin: 0 5px;
}

.output-container {
    margin-top: 30px;
    padding: 20px;
    background-color: #e6f7ff;
    border-radius: 10px;
}

.form-container {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    max-width: 400px;
    margin: 0 auto;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.center-info {
    margin-bottom: 15px;
    padding: 15px;
    border-bottom: 1px solid #ddd;
}

.center-info strong {
    color: #0073e6;
}