body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
    padding: 0;
}

.container {
    width: 400px;
    margin: 60px auto;
    background-color: #ffffff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 18px;
}

label {
    font-weight: bold;
    display: block;
    margin-bottom: 6px;
}

.radio-group label {
    font-weight: normal;
    display: block;
    margin-bottom: 6px;
    cursor: pointer;
}

.radio-group input {
    margin-right: 8px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #0077cc;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
}

button:hover {
    background-color: #005fa3;
}

#result {
    margin-top: 20px;
    text-align: center;
    font-weight: bold;
}