app/server-control/styles/kvm.scss

.noNVC_shown {
  display: inline;
}
.noVNC_hidden {
  display: none;
}

#noVNC_left_dummy_elem {
  flex: 1;
}

.kvm-window {
  padding: 0 2rem;
  .kvm__actions {
    padding-bottom: 1.2rem;
  }
}