gitlab-org--gitlab-foss/app/assets/stylesheets/generic/mobile.scss

/** Common mobile (screen XS, SM) styles **/
@media (max-width: $screen-xs-max) {
  .container .content {
    margin-top: 20px;
  }

  .nav.nav-tabs > li > a {
    padding: 10px;
    font-size: 12px;
    margin-right: 3px;

    .badge {
      display: none;
    }
  }

  .issues-filters,
  .dash-projects-filters,
  .check-all-holder {
    display: none;
  }

  .rss-btn {
    display: none !important;
  }

  .project-home-panel {
    .star-fork-buttons {
      padding-top: 10px;
      padding-right: 15px;
    }
  }

  .project-home-links {
    display: none;
  }
}

@media (max-width: $screen-sm-max) {
  .issues-filters {
    .milestone-filter, .labels-filter {
      display: none;
    }
  }

  .page-title .new-issue-link {
    display: none;
  }
}