Put a CSS var() inside calc() inside rgba(), and you'll get a Firefox bug: bugzilla.mozilla.org/show_bu…, codepen.io/kizu/pen/eZzZQP?e… /cc @davidbaron
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@kizmarh But twitter confused me by showing a screenshot of a non-Firefox browser when showing me your tweet!
Mar 11, 2016 · 12:45 AM UTC