@media (max-width: 700px) {
  .vendor-shell,
  .vendor-shell.vendor-navigation-collapsed,
  .vendor-shell.vendor-third-pane-hidden,
  .vendor-shell.vendor-navigation-collapsed.vendor-third-pane-hidden {
    display: block !important;
    min-height: 0 !important;
    padding: 0 !important;
    border: 0 !important;
  }

  .vendor-shell .vendor-left,
  .vendor-shell .vendor-right {
    display: none !important;
  }

  .vendor-shell .vendor-main,
  .vendor-shell .vendor-content {
    width: 100% !important;
    min-width: 0 !important;
  }
}