There seems to be an update on the lichess site, after the update the board is unusually large and there is no way to resize it. I have tried reloading the page, clicking the board geometry buttons changing back and forth between 2d and 3d the board still fills the whole screen. I can only see half the board.
Seems the problem, is limited to the chrome browser, other browsers are fine.
Barring that, click on "Board Geometry" under your profile, and you can adjust the board size there as well.
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