ttrss/lib/dijit/themes/tundra/Editor.css

.dijitEditor {
	border:1px solid #bfbfbf;
	border-top:0;
}

.tundra .dijitEditorIcon {
	background-image: url('../../icons/images/editorIconsEnabled.png'); /* editor icons sprite image - enabled state */
	background-repeat: no-repeat;
	width: 18px;
	height: 18px;
	text-align: center;
}
.tundra .dijitDisabled .dijitEditorIcon {
	background-image: url('../../icons/images/editorIconsDisabled.png'); /* editor icons sprite image - disabled state */
}