2015-03-19 Opera 28.0.1750.48 Opera 28 stable update - Opera Desktop ブラウザ ID Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36 OPR/28.0.1750.48