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Localisation

Date and Time

  • Basic date format: dd-mmm-yyyy, for example 15-Aug-2020

  • For the current day and the day before that you may use Today and Yesterday

  • Basic time format: #0:00 PM/AM (for example 1:36 PM)

  • For combined date and time use the word at. For examples: 05-Mar-2020 at 7:27 AM or Yesterday at 12:16 PM

Decimals

Internationalization


Headers


Labels


Capitalization

We use different capitalization styles for different types of content to improve scannability, organize information, and guide users to key actions.

When building new Firefox products, we also align capitalization practices with platform conventions to match user expectations.

Capitalization Styles

Title Case: Most Words Are Capitalized

Use title case for menu labels, buttons, navigation, and section headers.

Do capitalize

  • The first letter of nouns, adjectives, verbs, adverbs, and pronouns

  • The first and last words of the text element

  • The second word of a hyphenated compound unless it is an article or preposition (for example: “Quick-Search Options” and “Add-on Choices”).

Don’t capitalize

  • Articles (“a,” “an,” “the”) or prepositions with fewer than five letters (“to,” “on,” “at,” “by,” “from”) unless they’re the first or last words of the text element.

Sentence Case: Most Words Are Lowercase

Use sentence case for all body copy, image captions, and secondary, editorial subheadings.

Only capitalize the first word of the text element, as well as any proper nouns.

  • No labels