Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Start tag “head” seen but an element of the same type was already open.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Bad value “70%” for attribute “width” on element “img”: Expected a digit but saw “%” 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 “70%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “70%"” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “80%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “40%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “37%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “50%"” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “39%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “23%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “19%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “60%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “40%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Attribute “gesture” not allowed on element “iframe” at this point.
The “font” element is obsolete. Use CSS instead.
End tag “li” seen, but there were open elements.
Unclosed element “strong”.
Unclosed element “font”.
No “li” element in scope but a “li” end tag seen.
Attribute “seamless” not allowed on element “iframe” at this point.
Text not allowed in element “iframe” in this context.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “30%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “50%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “80%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
End tag “p” seen, but there were open elements.
Unclosed element “em”.
Element “font” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “120%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “160"” for attribute “width” on element “img”: Expected a digit but saw “"” instead.
Element “br” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Attribute “border” not allowed on element “input” at this point.
Unclosed element “b”.
No “b” element in scope but a “b” end tag seen.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.