I'm not sure what the hell is going on here but I can't access most of Bitcoin websites , website that I have tried so far are Blockchain.info , Coinmarketcap.com , BTC.com , Blocktrail.com , Poloniex.com , Kraken , Wirexapp , CoinsBank , Bitmixer.io and the list goes longer ...
Firefox keep giving me the following error : The connection has timed out , The server at Poloniex.com is taking too long to respond. (All websites)
Well i think there is problem with your connection internet, you must check it because i use Firefox too and everything went fine there was no problem or you can be replace your browser to other search engineers. Good luck