ct-ckeditor/plugins/shortUrl/html/style.css

ct-ckeditor

.cke_button__shorturl_label {
  display: inline;
}
.cke_button__shorturl_icon {
  background: url(../../../skins/moono/icons.png) no-repeat 0 -1248px !important;
}
.cke_shorturl__help-block {
  color: #ed3e3e
}