.es-hidden-text {
    display: none;
    visibility: hidden;
 }

.sfPageEditor .es-hidden-text {
   /* display: block;
    visibility: visible;
    color: red;*/
}
    .sfPageEditor .es-hidden-text:before {
        /* display: inline-block;
        visibility: visible;
        color: red;
        content: 'Elastic Exclusion: ';*/
    }