@media (max-width: 900px) {
  .so-mobile-shell {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    pointer-events: none;
  }

  .so-mobile-bottom-nav {
    pointer-events: auto;
    display: flex;
    background: #fff;
    border-top: 1px solid rgba(0,0,0,.08);
  }

  .so-mobile-bottom-nav button {
    flex: 1 1 0;
    padding: 0.75rem 0.5rem;
    font-size: 0.9rem;
    border: 0;
    background: none;
  }

  .so-mobile-bottom-nav button.is-active {
    background: rgba(0,0,0,.04);
    font-weight: 600;
  }

  /* generic mobile module behavior */
  .so-mobile-module {
    display: none;
  }
  .so-mobile-module.so-mobile-active {
    display: block;
  }

  /* helper to hide big desktop panels on mobile if I add it manually */
  .so-hide-on-mobile {
    display: none !important;
  }
}