MacDue ee72dcd523 LibWeb: Parse CSS <position>s ...

This parses <position> according to the following grammer:

<position> = [
  [ left | center | right ] || [ top | center | bottom ]
|
  [ left | center | right | <length-percentage> ]
  [ top | center | bottom | <length-percentage> ]?
|
  [ [ left | right ] <length-percentage> ] &&
  [ [ top | bottom ] <length-percentage> ]
]

The code is a little hairy and simply tries each alternative in turn,
manually checking the possible orders. There may be a better way to
represent this.

2022-11-01 23:07:05 +00:00

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