.open_pdf {
    display: none;
    font-size: 3vh;
    padding: 2vh 10%;
    border-radius: 12px;
    box-shadow: none;
    transition: 0.4s;
    box-shadow: 0 12px 16px 0 grey;
    margin: auto;
}

section {
    width: 90%;
    margin: auto;
    height: 100%;
}

object {
    margin-top: 2vh;
    width: 100%;
    height: 100%;
}

@media screen and (max-width: 992px) {

    .open_pdf {
        display: block;
        margin-top: 15vh;
    }

}