body {
            font-family: 'Inter', sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }

        .main-container {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            max-width: 1200px;
            width: 95%;
            margin: 50px;
            padding: 20px;
            background-color: #ffffff;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            box-sizing: border-box;
        }

        .course-info-container {
            margin-bottom: 30px;
        }

        .course-title {
            font-size: 2.2em;
            color: #1c3e66;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

        .course-instructor {
            font-size: 1.2em;
            color: #555;
            margin-bottom: 30px;
            text-align: center;
        }

        .course-price {
            font-size: 2em;
            color: #4CAF50;
            font-weight: 700;
            margin-bottom: 30px;
            text-align: center;
        }

        .course-features-title {
            font-size: 1.5em;
            color: #333;
            font-weight: 600;
            margin-bottom: 15px;
            text-align: center;
        }

        .course-features {
            list-style: none;
            padding-left: 0;
            margin-bottom: 30px;
        }

        .course-features li {
            margin-bottom: 15px;
            font-size: 1.1em;
            color: #666;
            display: flex;
            align-items: center;
        }

        .course-features li::before {
            content: "✔";
            color: #4CAF50;
            margin-right: 10px;
            font-size: 1.5em;
        }

        .about-course-container {
            margin-bottom: 30px;
        }

        .about-course-title {
            font-size: 1.8em;
            color: #1c3e66;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .about-course-text {
            font-size: 1.1em;
            color: #666;
            line-height: 1.7;
            margin-bottom: 20px;
        }

    

        .certification-title {
            font-size: 1.8em;
            color: #1c3e66;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .certification-text {
            font-size: 1.1em;
            color: #666;
            line-height: 1.7;
        }

        .course-syllabus {
            margin-top: 30px;
        }

        .syllabus-title {
            font-size: 1.8em;
            color: #1c3e66;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

        .syllabus-module {
            margin-bottom: 15px;
            padding: 15px;
            background-color: #f9f9f9;
            border-radius: 8px;
            border: 1px solid #ddd;
        }

        .module-title {
            font-size: 1.2em;
            color: #333;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .teacher-info-container {
            margin-top: 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .teacher-info-title {
            font-size: 1.8em;
            color: #1c3e66;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .teacher-name {
            font-size: 1.4em;
            color: #2c3e50;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .teacher-description {
            font-size: 1.1em;
            color: #666;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 80%;
        }

        .teacher-photo {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 20px;
        }

        @media (max-width: 768px) {
            .main-container {
                width: 98%;
                margin: 30px;
                padding: 15px;
            }
        }

        @media (max-width: 480px) {
            .main-container {
                width: 100%;
                margin: 20px 0;
                padding: 10px;
                border-radius: 0;
            }
            .course-title {
                font-size: 1.8em;
            }
            .course-instructor {
                font-size: 1em;
            }
            .course-price {
                font-size: 1.5em;
            }
            .course-features li {
                font-size: 1em;
            }
            .about-course-title {
                font-size: 1.6em;
            }
            .certification-title{
                 font-size: 1.6em;
            }
            .syllabus-title {
                font-size: 1.6em;
            }
            .module-title {
                font-size: 1.1em;
            }
            .teacher-info-title {
                font-size: 1.6em;
            }
            .teacher-name {
                font-size: 1.2em;
            }
            .teacher-description {
                font-size: 1em;
                max-width: 95%;
            }
            .teacher-photo {
                width: 120px;
                height: 120px;
            }
        }