menu and text shifted to the left

Hi there,

on my homepage a 3-column-text is shifted to the left, the first column is partly beyond the window frame, the column cannot be completely seen or navigated to. The horizontal menu is shifted, too (it is configured as “centered”). Does anyone have an idea how that happens and can be fixed? I didn’t mess around with html code. Former theme was Hive.
Firefox, also happens on Chrome. Also happens with two columns. Current theme version Version: 1.3.11.

Thank you, Thilo

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