[Bug] Parser fails to parse CSS Grid syntax and disallows style submisssion
grid-template-columns: [begin] repeat( auto-fill, minmax( calc(var(--item-cell-width) + 18px), 1fr ) ) [end];
Style code has an error - parse error on value "[" (LSQUARE) on line 52 around "s
CSS specification has very clear rules on how a compliant CSS parser MUST skip rules, declarations and properties it does not understand. Failing to parse one property must never be a reason for not accepting a user style, as CSS is constantly evolving and no parser will ever be able to understand all syntax (until CSS dies).