github-full-repository-info-in-user-page.user.css

@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("github.com") {
    .repo-and-owner.css-truncate-target, .repo-description.css-truncate-target {
        white-space: normal;
        overflow: visible;
        max-width: 100%;
    }
    .repo-description.css-truncate-target {
        line-height: 1.2;
    }
}