seleniumのメソッドです
driver.findelement(:id,"ID").locationonce_scrolled_into_viewseleniumでjavscriptを使う
driver.execute_script("window.scroll(0,1000);")tabキーを使って動かす
driver.findelement(:id,"ID").sendkeys :tabdriver.findelement(:id,"ID").locationonce_scrolled_into_viewdriver.execute_script("window.scroll(0,1000);")driver.findelement(:id,"ID").sendkeys :tab