@media screen and (max-width: 768px) {
    html, body {
        width: 100%;        
    }

    body {
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
        height: auto;
    }

    .banner-content p {
        width: 75%;
        font-size: 14px;
    }

    button {
        width: 226px;
    }

    .separator {
        margin: 10px 0;
    }

    #course-content h2 {
        font-size: 24px;
        letter-spacing: 4.08px;
    }

    #course-content p {
        font-size: 15px; 
        padding: 0 10px;
    }

    .module-list {
        gap: 10px;
    }

    .module {
        width: 85%; 
        padding: 16px;
        text-align: center;
    }

    .separator {
        margin: 0 0 -1px;
    }
}