Gregory Gubarev 86bf84264e Responsive Web Design: Added hint to Attach a Fallback Value to a CSS Variable (#19594) ...

Added hint to Attach a Fallback Value to a CSS Variable (https://guide.freecodecamp.org/certifications/responsive-web-design/basic-css/attach-a-fallback-value-to-a-css-variable/)

2018-10-20 21:56:40 -05:00

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Responsive Web Design: Added hint to Attach a Fallback Value to a CSS Variable (#19594)

2018-10-20 21:56:40 -05:00