Function style::custom_properties::parse_declaration_value_block

fn parse_declaration_value_block<'i, 't>(
    input: &mut Parser<'i, 't>,
    input_start: SourcePosition,
    references: &mut References,
    missing_closing_characters: &mut String
) -> Result<(TokenSerializationType, TokenSerializationType), ParseError<'i>>

Like parse_declaration_value, but accept ! and ; since they are only invalid at the top level.