.pdf-viewer {
        width: 100%;
        max-width: 1200px;
        height: 800px;
        border: 0;
        display: block;
        margin: 0 auto;
    }

    /* Mobile */
    @media (max-width: 767px) {
        .pdf-viewer {
            width: 100%;
            height: 600px;
        }
    }