.modal .icon-close-popup {
  top: 0px;
  right: auto;
  left: 0px;
}

.input-box .prefix {
  margin-left: 10px;
  margin-right: auto;
}

@media (min-width: 576px) {
  .modal .icon-close-popup {
    left: 10px;
    right: auto;
  }
}