main {
    justify-content: flex-start;
    align-items: center;
    flex-direction: column;
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
label {
    cursor: pointer;
}

.hidden {
    display: none;
}

#quiz-subjects-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

#searchInQuestions,
#searchInput {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #f9f9f9;
}
body.dark-mode #searchInQuestions,
body.dark-mode #searchInput {
    background-color: #666;
    border: 1px solid #888;
    color: #fff;
}

#quiz-room {
    margin: 0 auto;
    max-width: 500px;
}

.explanation-container {
    font-style: italic;
    padding: 10px;
    text-decoration: underline;
}

.quiz-subject {
    width: 150px;
    min-height: 50px;
    border: 1px solid #444;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px;
    cursor: pointer;
    background-color: #f2f386;
    color: #444;
    padding: 20px;
    border-radius: 8px;
    font-weight: bold;
    font-family: Arial, sans-serif;
    transition: all 0.2s;
}

.quiz-subject:hover {
    background-color: #dee15a;
    transform: translateY(-5px);
}

.quiz-subject p {
    margin: 0;
}

.question-container.error {
    border: 1px solid red;
    border-radius: 8px;
    padding: 10px;
}

input[type="checkbox"] {
    cursor: pointer;
}