OptionalblockingThe blocking attribute indicates that certain operations should be blocked on the fetching of an external resource. The value is an unordered set of unique space-separated tokens, each of which are possible blocking tokens.
OptionalidThe id global attribute defines a unique identifier (ID) which must be unique in the whole document.
OptionalmediaThis attribute defines which media the style should be applied to. Its value is a media query, which defaults to all if the attribute is missing.
OptionalnonceA cryptographic nonce (number used once) used to allow inline styles in a style-src Content-Security-Policy. The server must generate a unique nonce value each time it transmits a policy. It is critical to provide a nonce that cannot be guessed as bypassing a resource's policy is otherwise trivial.
OptionaltitleThis attribute specifies alternative style sheet sets.
From T, pick a set of properties whose keys are in the union K