.checksum{
    overflow-wrap: break-word;
    padding:200px 10% 200px;
    text-align: center;
    background-color: #fff;
    color:#000;
    font-size: 1.4rem;
    line-height: 2;
    font-weight: 300;
    letter-spacing: 0.1em;
    @media screen and (max-width: 767px) {
                font-size: 1.2rem;
            }
}