body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #F4F4F4;
    color: #333333;
}

.quiz-container {
    background-color: #FFFFFF;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.question {
    font-size: 24px;
    margin-bottom: 20px;
}

.slider-container {
    margin: 20px 0;
    position: relative;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 15px;
    background: #ddd;
    outline: none;
    opacity: 0.7;
    border-radius: 5px;
    transition: opacity 0.2s;
}

.slider:hover {
    opacity: 1;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 40px;
    height: 40px;
    background: url('smiley.png') no-repeat center;
    background-size: contain;
    cursor: pointer;
    border: none;
}

.slider::-moz-range-thumb {
    width: 40px;
    height: 40px;
    background: url('smiley.png') no-repeat center;
    background-size: contain;
    cursor: pointer;
    border: none;
}

.slider-value {
    font-size: 18px;
    margin-top: 10px;
}

.submit-button {
    text-decoration: none;
    background-color: #E30611;
    color: #FFFFFF;
    padding: 10px 15px;
    border-radius: 5px;
    display: inline-block;
    margin-top: 20px;
    transition: background-color 0.3s;
}

.submit-button:hover {
    background-color: #B2050D;
}