.ui-dialog.ui-corner-all.ui-widget.ui-widget-content.ui-front.ui-draggable.ui-resizable {
  padding: 0;
}

.ui-dialog .ui-widget-header {
  margin: 0;
}

.ui-dialog-content {
  height: 100%;
}

.ui-button.ui-corner-all.ui-widget.ui-button-icon-only.ui-dialog-titlebar-close {
  margin-top: -10px;
}

.ui-button.ui-corner-all.ui-widget.ui-button-icon-only.ui-dialog-titlebar-close:hover {
  background: url("images/icono_cerrar.png") no-repeat center center;
}

.ui-button-icon.ui-icon.ui-icon-closethick {
  background: url("images/icono_cerrar.png") no-repeat center center !important;
}