@import url('https://fonts.googleapis.com/css2?family=Archivo:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap');
        body {
            font-family: 'Roboto', sans-serif;
            background-color: #f0f0f0;
            margin: 0;
            padding: 0;
        }
        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #ffffff;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }
        h1 {
            text-align: center;
            font-size: 28px;
            color: #333;
            margin-bottom: 20px;
        }
        .exercise {
            margin: 20px 0;
            padding: 20px;
            background-color: #ffffff;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }
        .exercise h2 {
            font-size: 24px;
            margin-bottom: 10px;
            color: #333;
        }
        .exercise p {
            margin-bottom: 15px;
            color: #666;
        }
        textarea {
            width: 100%;
            height: 100px;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .btn-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 20px;
        }
        .btn-container button {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .btn-container button:hover {
            background-color: #0056b3;
        }
        .score {
            text-align: center;
            font-size: 24px;
            margin-top: 20px;
            color: #333;
        }