.ui-dialog {
  background: #eff3f5;
}

.ui-button {
  background: #2d2d2d;
  border: none;
}

.ui-icon-closethick::after{
  content: "╳";
  text-indent: 0;
  display: block;
  color: #eff3f5;
  line-height: 15px;
  width: 15px;
}

.ui-dialog-titlebar {
  background: #2d2d2d;
  color: #eff3f5;
}