/* Override for jQuery UI close icon when sprite images are missing */
.ui-dialog .ui-dialog-titlebar-close .ui-icon.ui-icon-closethick {
  background-image: none; /* override themed sprite */
  position: relative;
}
.ui-dialog .ui-dialog-titlebar-close .ui-icon.ui-icon-closethick::before,
.ui-dialog .ui-dialog-titlebar-close .ui-icon.ui-icon-closethick::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 2px;
  background-color: #6da8d5; /* theme blue */
  transform-origin: center;
}
.ui-dialog .ui-dialog-titlebar-close .ui-icon.ui-icon-closethick::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.ui-dialog .ui-dialog-titlebar-close .ui-icon.ui-icon-closethick::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}