#simple-quiz {
    max-width: 100%;
    margin: 0 auto;
    font-family: inherit;
    padding: 0 10px;
    box-sizing: border-box;
}

@media (min-width: 481px) and (max-width: 767px) {
    #simple-quiz {
        padding: 0 20px;
    }
}

@media (min-width: 768px) {
    #simple-quiz {
        max-width: 600px;
        padding: 0;
    }
}

#simple-quiz-progress {
    text-align: right;
    margin-bottom: 10px;
    font-weight: bold;
}

#simple-quiz-form {
    background: none;
}

#question-container {
    background: #ffffff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 15px;
    margin-bottom: 20px;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    #question-container {
        max-width: 600px;
        padding: 20px;
    }
}

#question-container .simple-question p {
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: bold;
}

#question-container .simple-question label {
    display: block;
    margin-bottom: 10px;
    font-size: 16px;
}

@media (max-width: 480px) {
    #question-container .simple-question p {
        font-size: 16px;
    }

    #question-container .simple-question label {
        font-size: 14px;
    }
}

#question-container .simple-question input[type="radio"] {
    margin-right: 10px;
}

#simple-quiz-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#simple-quiz-navigation button,
#simple-quiz-navigation input[type="submit"] {
    background: none;
    border: none;
    padding: 5px;
    font: inherit;
    color: inherit;
    cursor: pointer;
}

@media (max-width: 480px) {
    #simple-quiz-navigation button,
    #simple-quiz-navigation input[type="submit"] {
        padding: 3px;
    }
}

#simple-quiz-navigation button:disabled {
    opacity: 0.5;
    cursor: default;
}

#simple-quiz-navigation .navigation-button {
    font-size: 24px;
}

@media (max-width: 480px) {
    #simple-quiz-navigation .navigation-button {
        font-size: 20px;
    }
}

#simple-quiz-result {
    margin-top: 20px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}