safari class

(function () {
	var ua = navigator.userAgent.toLowerCase();
	if (ua.indexOf('safari') != -1) {
	  if (ua.indexOf('chrome') > -1) {
	  	console.log('chrome');
	  } else {
	  	console.log('safari');
	  	document.documentElement.classList.add('jnews-safari');
	  }
	}
})();