Fakturowo.pl W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Malformed byte sequence: “b3”.
Malformed byte sequence: “b1”.
Malformed byte sequence: “ea”.
Malformed byte sequence: “f3”.
Malformed byte sequence: “f1”.
Malformed byte sequence: “bf”.
Malformed byte sequence: “b6”.
Malformed byte sequence: “e6”.
Malformed byte sequence: “a6”.
Malformed byte sequence: “bc”.
Bad value “29-03-2017 09:51” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “25-10-2017 12:08” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “07-03-2017 09:33” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Malformed byte sequence: “ca”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
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