@media (max-width: 767px) {
  #block-piketa-searchapiform,
  #block-piketa-searchapiform form,
  #block-piketa-searchapiform .form-item,
  #block-piketa-searchapiform .form-control {
    box-sizing: border-box;
    max-width: 100%;
    width: 100%;
  }

  #block-piketa-searchapiform .form-actions {
    left: auto;
    right: 0;
  }
}