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An unintended keystroke combination reduced the display to 2/3 of the screen (NOT F11) leaving the right-hand side black in only one tab (other tabs are ok).

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  • Last reply by user633449

arnesson
arnesson
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Windows 7, Firefox 17.0

Solved! Thanks Tyler

Modified by arnesson

Chosen solution

Font size and zoom - increase the size of web pages try to reset the zoom to 100%

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user633449
user633449
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Chosen Solution

Font size and zoom - increase the size of web pages try to reset the zoom to 100%