Implements:
- border-start-start-radius
- border-start-end-radius
- border-end-start-radius
- border-end-end-radius

In both 1 and 2-argument forms.

Implements the following:
- scroll-margin-block
- scroll-margin-inline

both as 1 and 2 argument versions.

Scroll-margin properties don't accept percentages, only basic lengths.
https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-margin

- All scroll-margin properties have had their input types changed from LengthSupported { auto : Supported } to Length.

Implements the following:
- scroll-margin-block-start
- scroll-margin-block-end
- scroll-margin-inline-start
- scroll-margin-inline-end

- Adds an implementation of the inset property in 1, 2, 3, and 4 argument forms.
- Renames the pre-existing 'inset' value to 'inset_', based on current package conventions.

Implements the following:
- inset-block
- inset-inline
as both 1 and 2-argument functions.

Implements the following:
- inset-block-start
- inset-block-end
- inset-inline-start
- inset-inline-end

Makes the docs for top, bottom, left and right properties flow a bit better with the link use.
Changed the links for inset-block and inset-inline functions from MDN to CSS Tricks Almanac.

…-border-radii

Implements the following:
- scroll-padding-block
- scroll-padding-inline

Both as 1 and 2-argument functions.

- Fixed variable naming in scrollMarginBlock2 and scrollMarginInline2.
- Fixed a typo I noticed in scrollPadding's documentation.

Implements the following properties:
- scroll-padding-block-start
- scroll-padding-block-end
- scroll-padding-inline-start
- scroll-padding-inline-end

…s-logical-border-radii

Some one-argument functions I wrote didn't use BaseValue when they should have.. This has been fixed.

Implements the following:
- block-size
- inline-size
- max-block-size
- max-inline-size
- min-block-size
- min-inline-size

Fixes:
- Both the width and height properties can accept, pct, auto, maxContent, minContent and fitContent, so I've changed their type annotations to add them.
- Re-arranged existing sizing property and variable functions so they flow better (group functions first and values later).
- Made the documentation for minContent, maxContent and fitContent a bit more concise and inclusive to Logical size properties.

Implements the following:
- gap
- row-gap

This commit also groups column-gap with the aforementioned properties since they're related.

Implements the following:
- overflow-block
- overflow-inline

Implements the following:
- overscroll-behavior
- overscroll-behavior-x
- overscroll-behavior-y
- overscroll-behavior-block
- overscroll-behavior-inline

- The 'inset_' field for box-shadows has been renamed to 'inset' because they don't interact with the 'inset_' function.
- Fixed a typo in the boxShadows documentation where the function examples were called 'boxShadow' instead of 'boxShadows'.

# Conflicts:
#	src/Css.elm

The contain variable now includes documentation for overscrollBehavior as well as backgroundSize.

- Adds quotes property (in 1, 2 and 4 argument versions)
- Moves the string value up to the area with other shared value types

Implements:
- text-overflow property (in 1 and 2-argument forms)
- ellipsis value (for text-overflow)

Implements the following:
- line-break
- strict value for line-break
- loose value for line-break

Adds line-break as a use case the documentation for the other values that it accepts.

Adds preliminary 2 and 3-argument versions of hanging-punctuation.

These need more work because the way the arguments work here can enable incorrectly typed CSS.

Implements the following:
- resize property
- horizontal and vertical values (for resize)

Changed the variable names in various functions to eliminate naming conflicts with the new horizontal and vertical values.

Implements the following:
- contain property (1, 2, 3 and 4 argument versions)
- strict value
- size value
- layout value
- style value
- paint value

Changes to existing code:
- style variables in functions have been renamed to styleVal to avoid clashes with style.
- size variables in functions have been renamed to sizeVal to avoid clashes with size.
- Renamed contain value to contain_ so as to not clash with contain property.

It's unclear how to mark contain4 since having values is redundant but calling it containAll is probably misleading, so it's being called contain4 pending further discussion.

Implements the following:
- paint-order property (in 1, 2 and 3-argument forms)
- markers value

Adjusts the documentation of fill_ and stroke to mention that they work with paintOrder.

…isc1

- Adds clip value to overflow, overflowX and overflowY.

- Adds perspective property
- Renames the pre-existing 'perspective' value to 'perspective_'

- Implements perspective-origin property.
- Applies elm-format to the previous few commits that hadn't had it applied.

- Adds scale property (as scale, scale2, and scale3)
- Renames scale value to scale_ (to avoid conflicts with scale)
- Renames scale2 value to scale2_ (to avoid conflicts with scale2)
- Adds rotate property (as rotate and rotate2)
- Renames rotate value to rotate_ (to avoid conflicts with rotate)
- New value function: z
- New value function: vec3
- Changes some variable names in functions to avoid conflicts with new value functions

Adds the folowing pseudo-elements:
- ::backdrop
- ::cue
- ::marker
- ::placeholder
- ::selection

- Keeps active, disabled and after DRY.
- Makes a doc I just made make a little more sense.

Adds the following pseudo-classes:
- :checked
- :empty
- :enabled
- :first-child
- :first-of-type
- :focus
- :fullscreen
- :hover
- :in-range
- :indeterminate
- :invalid
- :last-child
- :last-of-type
- :link
- :only-child
- :only-of-type
- :out-of-range
- :read-only
- :read-write
- :required
- :root
- :scope
- :target
- :valid
- :visited

Applies elm-format to recent changes.

- Noted that contain: style; is at-risk of being depreciated.

# Conflicts:
#	src/Css.elm

There were a series of conflicts and a few duplicate functions from the recent merge. This fixes those issues.

- Added all possible implementations of font-variant-east-asian.
- Added all possible values of font-variant-east-asian.
- Changed the docs for fullWidth so it includes it's new use with fontVariantEastAsian.

- Added the font-optical-sizing property.

Implements the following:
- font-kerning
- font-language-override
- font-synthesis (1, 2 and 3-argument variants)
- font-variant-position

Other changes:
- made contain4 a normal property because I figured it would be more readable to have explicit CSS values rather than implicit ones.

Cleaning up by moving values shared across different types of properties into the 'Shared Values' section.
These values also have updated documentation to these the properties that use them.

Moved values:
- start
- end
- left_
- right_
- top_
- bottom_
- baseline
- clip
- block
- inline
- ruby

Pre-existing values in the shared category have also had updated documentation.

Some documentation to other values have had lightly improved grammar.

Bringing more values that should be in the shared section:
- stretch (added documentation)
- center (added documentation)
- content (improved documentation)
- normal
- text (improved docs)
- paddingBox
- cover (improved docs)
- contain_

Other stuff
- Improved documentation for placeholder.
- Added links to moved values in the Align Items section of the docs so the user knows that these are other values that can be used.
- Simplified the wording in the documentation for repeat values to match the wording in other documentation for values.
- Applied elm-format to previous commits.

As I'm working on this file more, I found that a lot of things didn't have clear organisation so I figured it would be good to give them a look over.

Moved docs and exposing
- Moved the shared values section to a more logical part of the docs and exposing (after the main measurements)
- Moved the url variable higher up in the docs and exposing.
- Added one line break between the cursor properties and the cursor values since I figured that would separate them a bit more neatly.

Edited documentation
- Changed the levels of different headers to reflect what level they're actually at in the general categorisation heirarchy.
- Fixed a doc typo in contain_ and textOverflow2.
- Renamed 'Align Items' section to 'Flex align items' and made it a subheader of the Flexbox module section as there's no other purpose for these particular values.

More shared values have been organised together:
- fullWidth
- sub
- super

Misc:
- Moved ltr and rtl values to be next to the direction property in the code (since they are the only things that go together)

Grouped what might be the last batch of shared values:
- all_
- both
- strict
- fill_
- stroke
- always
- x
- y
- style

Misc:
- Expanded documentation for slice and clone.
- Fixed some documentation typos for shared values
- Applied elm-format to Css.elm.

- Rearranged the shared values so values with similar effects and categories are next to each other.
- Improved documentation

Forgot to move clip to it's more appropriate place in the shared values.