Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” not allowed here.
Attribute “wmode” not allowed on element “object” at this point.
Element “object” is missing one or more of the following attributes: “data”, “type”.
Duplicate ID “video-u3CrKFdQIbQ”.
Bad value “javascript:void()” for attribute “href” on element “a”: syntax error
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Duplicate ID “c774”.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “dia-group-Single-0” for attribute “rel” on element “a”: The string “dia-group-Single-0” is not a registered keyword.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “video-u3CrKFdQIbQ” was here.
The first occurrence of ID “c774” was here.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
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