[media-types] [IANA #1450656] Re: Re: Review request for updated registration of text/css

Hi Alexey,

Can you review this one? We have confirmation from the W3C liaison that this can be processed.

thanks,
Amanda

On Wed Apr 22 07:45:46 2026, amanda.baber wrote:
> Hi Chris and IETF-designated media type experts,
> 
> Sorry, IANA isn't subscribed to the [email protected] list, so we
> don't have a ticket for/haven't seen this. In order to make this
> update, we need approval from one of the IESG-designated experts
> (Alexey Melnikov, Darrel Miller, Murray Kucherawy). We usually assign
> the request to a specific expert when we forward the request to the
> list.
> 
> Alexey or Murray (asking you in case you ran into something like this
> as an AD), can one of you pick up this request? Because this media
> type was registered by RFC 2318, but has a blank change controller
> field, we also need confirmation that this media type can be modified
> without an RFC. The template's "published specification" field does
> refer to a W3C spec.
> 
> W3C has asked us to confirm media type submissions with one of their
> liaisons, so I'll send that message to them separately.
> 
> thanks,
> Amanda
> 
> On Tue Apr 21 19:48:35 2026, [email protected] wrote:
> > Amanda,
> >
> > All the review comments on the updated registration request for
> > text/css
> > have been addressed to the satisfaction of those commenting.
> >
> > What is the next step for updated registration?
> >
> > On 2026-03-26 18:50, Chris Lilley wrote:
> > >
> > > The new template (with public.css added):
> > >
> > > Type name: text
> > >
> > > Subtype name: css
> > >
> > > Required parameters: none
> > >
> > > Optional parameters: charset (but see below)
> > >
> > > Encoding considerations:
> > >
> > > For use with transports that are not 8-bit clean, quoted-
> > > printable encoding is recommended since the majority of
> > > characters will be CSS syntax and thus correspond to the
> > > US-ASCII-compatible subrange of UTF-8.
> > >
> > > Security considerations:
> > >
> > > CSS is a modular specification and thus, the individual
> > > Security Considerations section of each CSS module in use
> > > should be consulted.
> > >
> > > Interoperability considerations:
> > >
> > > CSS has proven to be widely interoperable across computer
> > > platforms, across Web browsers of different makes, and for import
> > > and export in multiple authoring tools.
> > >
> > > Published specification:
> > >
> > > https://www.w3.org/TR/css
> > >
> > > Applications that use this media type:
> > >
> > > CSS is device-, platform- and vendor-neutral and is supported by
> > > a wide range of Web user agents and authoring tools for
> > > formatting HTML documents.
> > >
> > > Fragment identifier considerations:
> > >
> > > N/A
> > >
> > > Additional information:
> > >
> > > Deprecated alias names for this type: N/A
> > > Magic number(s): N/A
> > > File extension(s): .css
> > > macOS Uniform Type Identifier(s): public.css
> > > Windows clipboard name(s): N/A
> > >
> > > Person & email address to contact for further information:
> > >
> > > The W3C CSS Working Group<[email protected]>
> > >
> > > Intended usage:
> > >
> > > COMMON
> > >
> > > Restrictions on usage:
> > >
> > > N/A
> > >
> > > Author: The W3C CSS Working Group
> > >
> > > Change controller: W3C
> > >
> > > Fallback encoding:
> > >
> > > For Web compatibility, to determine the character encoding,
> > > user agents follow the CSS Syntax Level 3 specification,
> > > "To determine the fallback encoding of a stylesheet"
> > > https://www.w3.org/TR/css-syntax-3/#determine-the-fallback-encoding
> > >
> > > Stylesheet authors should author their stylesheets in UTF-8, and
> > > ensure that either an HTTP header (or equivalent method) declares
> > > the encoding of the stylesheet to be UTF-8, or that the referring
> > > document declares its encoding to be UTF-8.
> > >
> > > --
> > > Chris Lilley
> > > @[email protected]
> > > W3C Distinguished Expert, Color, Graphics & Fonts
> > > W3C Technical Programming Team, Core Web Design
> > >
> > > _______________________________________________
> > > media-types mailing list [email protected]
> > > To unsubscribe send an email [email protected]
> >

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