tt-rss/lib/dijit/themes/nihilo/Editor.css

.nihilo .dijitToolbar .dijitToolbarSeparator {background: url('../../icons/images/editorIconsEnabled.png');}.nihilo .dijitEditorIcon {background-image: url('../../icons/images/editorIconsEnabled.png'); background-repeat: no-repeat; width: 18px; height: 18px; text-align: center;}.nihilo .dijitDisabled .dijitEditorIcon {background-image: url('../../icons/images/editorIconsDisabled.png');}