The new look

You also might have clicked the green/white box on the top left of your screen, which disables chat. Click it again to get the chat back.

> The chat appear under the chess game

I can make the chat appear under the chess game,
if I resize the browser window - making it narrower.

Can you make your window wider?

Chess on!

Edit, the easiest way to do this (by accident or purposefully) is too Zoom in / Zoom out in the browser...

Please tell me how to do all the solutions. I turn on and off the zen mode nothing happened. i don't know how to zoom in and out in the browser. What has happened is a complete different look. the chat appear under the board and the puzzle beside the chat.
Help

Please send a screenshot so we know exactly what's happening

i think it's because he made his board size too big

Zoom out can be done in Firefox by holding CTRL key and scrolling mouse wheel down.

Holding CTRL key and pressing minus key might work as well.

Good luck!

O.K. thanks everyone, the problem was that I zoom without realizing it. It is solved now.