ttrss/lib/dijit/themes/nihilo/layout/AccordionContainer_rtl.css

.dijitRtl .nihilo .dijitAccordionArrow {
	background-position: 0 top;
}

.dijitRtl .nihilo .dijitAccordionTitleSelected .dijitAccordionArrow {
	/* same rule as LTR mode, just listed to override previous rule in this file */
	background-position: -15px top;
}