style-responsive.css

@media (max-width: 979px) {
    .github-fork-ribbon-wrapper {
        display: none !important;
    }
}

@media (min-width: 768px) and (max-width: 979px) {
    #about,
    #contact,
    #generator {
        width: 60%;
    }
}

@media (max-width: 767px) {
    #about,
    #contact,
    #generator {
        width: 80%;
    }

    .footer {
        margin-left: -20px;
        margin-right: -20px;
    }
}