CSS Selector-How to locate Parent Element
Referring to the Is there a CSS parent selector? topic, there is no parent selector in CSS. Leave the "getting the parent" part to the XPath:
WebElement we = dr.findElement(By.cssSelector("div[id='gf-BIG']"));
WebElement parent = we.findElement(By.xpath(".."));
If it would help here is example how get it by xpath
WebElement parentElement = driver.findElement(By.xpath("//div[@id='gf-BIG']/parent::parentElementTag"));
parentElementTag - could be div/span/tr - depends on your case
If the parent is say div, you could try something like below
div div[id='gf-BIG']