1. Click on your name in the upper right-hand bar, next to your picture.
2. At the bottom of the drop-down box pick: SHOW ALL - MARK READ -
PREFERENCES
3. Scroll down to: STYLE - FONT SIZE - TIME ZONE - EMAIL OPTIONS -
CONTENT OPTIONS
4. Check the DISABLE HOLIDAY STYLING box
5. Click SAVE
All done!
In short, it's:
Name - Preferences - Content Options - Disable Holiday Styling - Save
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