Errors:
Quirky doctype. Expected “<!DOCTYPE html>”.
Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).
Bad value “text/html; charset=ISO-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.
Attribute “nof” not allowed on element “body” at this point.
Attribute “topmargin” not allowed on element “body” at this point.
Attribute “leftmargin” not allowed on element “body” at this point.
The “alink” attribute on the “body” element is obsolete. Use CSS instead.
The “link” attribute on the “body” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “body” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “body” element is obsolete. Use CSS instead.
The “vlink” attribute on the “body” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
Attribute “height” not allowed on element “table” at this point.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Element “table” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “height” attribute on the “td” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “tr” element is obsolete. Use CSS instead.
The “valign” attribute on the “tr” element is obsolete. Use CSS instead.
Duplicate ID “Navigationsschaltflaeche11”.
End tag “p” implied, but there were open elements.
Unclosed element “font”.
End tag “p” seen, but there were open elements.
No “p” element in scope but a “p” end tag seen.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “Navigationsschaltflaeche11” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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