/* Preserve existing desktop/mobile button dimensions; centre the icon itself. */
.gbr-dialog-close.gbr-centered-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  text-indent: 0;
}
.gbr-dialog-close.gbr-centered-close > svg {
  display: block;
  flex: 0 0 auto;
  margin: 0;
  pointer-events: none;
}