Histor.nl W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “pragma” for attribute “http-equiv” on element “meta”.
Bad value “content-style-type” for attribute “http-equiv” on element “meta”.
Bad value “content-script-type” for attribute “http-equiv” on element “meta”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “hfCurrency”.
Duplicate ID “hfShippingCostsFreeShort”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “menuElem”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “hfCurrency” was here.
The first occurrence of ID “hfShippingCostsFreeShort” was here.
Empty heading.
The first occurrence of ID “menuElem” was here.
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