gitlab-org--gitlab-foss/app/assets/stylesheets/themes/ui_basic.scss

/**
 * This file represent some UI that can be changed
 * during web app restyle or theme select.
 *
 */
.ui_basic {
  /*
   * Common styles
   *
   */
  a {
    color: $link_color;
    &:hover {
      text-decoration:none;
      color: $blue_link;
    }
  }
}