:root { --sp: 12px; }
@media (max-width: 576px){
  .container { padding-left: var(--sp); padding-right: var(--sp); }
  .table-responsive { overflow-x:auto; }
  .table { font-size: 14px; }
  .btn { padding: .45rem .7rem; font-size: .9rem; }
  .form-control { font-size: .95rem; }
}