The following need to be included into the Validator.
There a error with the W3C Validator
It seems to be it does not like any of the following
Some or none of the frac options e.g.
⅛ ⅕ ⅓ ⅜ ⅖ ⅗ ⅝
⅔ ⅘ ⅞
not to mention
The intended web page had to be changed &#NNNN; (where NNNN is a four
digit number) as suggested by this group to make the web page pass
the Validator, but the point is why have something like ⅛ if
one con not use it to validate a page.