Java Selenium problem z click

List<WebElement> rows = driver.findElements(By.className("detail-card__heading"));
		List<WebElement> cols=new ArrayList<WebElement>();
		for(int i=0;i<rows.size();i++){
		cols=rows.get(i).findElements(By.tagName("div"));
		 for(WebElement col:cols) {
		 System.out.print("cell value "+col.getText());
		 col.click();
		 System.out.println("Przeszła oferta numer"+i);
		 }
				}