body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #2c3e50;
}

.question {
    margin-bottom: 30px;
}

.radio-group, .checkbox-group {
    margin-top: 10px;
}

.radio-group label, .checkbox-group label {
    display: block;
    margin: 8px 0;
}

button {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: #3498db;
    color: white;
    border: none;
    font-size: 16px;
    cursor: pointer;
    margin-top: 20px;
}

button:hover {
    background-color: #2980b9;
}

.result-box {
    margin-top: 30px;
    padding: 20px;
    background-color: #ecf0f1;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
}

.input-group {
    margin-bottom: 20px;
}