<!DOCTYPE html> <link rel="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org"> <link rel="help" href="hhttps://drafts.csswg.org/css-values-4/#calc-range"> <link rel="help" href="https://drafts.csswg.org/css-counter-styles/#the-counter-style-rule"> <link rel="match" href="negative-calc-to-non-negative-integer-ref.html"> <meta name="assert" content="Negative calc() passed to <non-negative-integer> property value as argument should be addressed properly."> <style> @counter-style foo { system: additive; additive-symbols: 1 'I', calc(-1) 'X'; range: infinite infinite; } </style> <ol style="list-style-type: foo" start=-1> <li></li> <li></li> <li></li> </ol>