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Use the appropriate HTML <label> element and label for attribute.
Labels must remain visible when an input is focused.
Labels must be announced to the screen reader on focus.
Ensure the help text which appears underneath an input is read when an assistive technology user stops at an input using ARIA.
Use sentence case capitalization (see the Capitalization section below under Text Formats).
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 LUX applications, also align capitalization practices with platform conventions to match user expectations (e.g. specific iOS conventions).
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