app/static/style.css

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}

#quiz-container {
    display: none;
    padding: 20px;
    margin: 20px auto;
    background: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#file-selection, #results-container {
    padding: 20px;
    margin: 20px auto;
    background: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
    font-size: 16px;
    color: #333;
    margin-bottom: 15px;
}

#options {
    margin-top: 20px;
}

label {
    display: block;
    font-size: 16px;
    margin-bottom: 10px;
    cursor: pointer;
}

#navigation {
    justify-content: start;
    margin-top: 20px;
}

#timer, #question-number {
    margin-bottom: 20px;
    font-size: 18px;
    color: #555;
}

button#restart {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    background-color: #28a745;
    color: white;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

button#restart:hover {
    background-color: #218838;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

th {
    background-color: #f4f4f4;
}

td.correct {
    background-color: #d4edda;
    color: #155724;
}

td.incorrect {
    background-color: #f8d7da;
    color: #721c24;
}

td.not-answered {
    background-color: #fff3cd;
    color: #856404;
}