Biessegroup.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad character “
” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
The “form” role is unnecessary for element “form”.
The “navigation” role is unnecessary for element “nav”.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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