Chess board size

The chess board keeps getting buggy when i keep resizing the size of my browser.... like when i maximize it the chessboard also goes with the screen but when i minimum it and instead of maximizing it i drag the ends of the browser to size it the way i want the screen stays small wtf....

lets just say the browser randomly makes my chess board tiny so thats its unplayable and the chess.com settings for size wont do nothing... i always leave it at maximum but sometimes its tiny and uses the worst graphics ever...

Im using latest firefox version please help

It does sthat for me too. I think FF is just crazy.

When playing the computer I can only see a 4 X 6 portion of the board.

I can't play against the computer because I cant make the board small enough to see the whole board.  How do I fix this?   

Amendment: it does that for me in Chrome as well. 

the board is too big and I can't resize it