Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “header” was here.
The first occurrence of ID “navigation” was here.
The first occurrence of ID “nav” was here.
The first occurrence of ID “header-searchform” was here.
The first occurrence of ID “header-s” was here.
The first occurrence of ID “header-searchsubmit” was here.
The first occurrence of ID “” was here.
The “contentinfo” role is unnecessary for element “footer”.
Errors:
Bad value for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Start tag “head” seen but an element of the same type was already open.
Bad value “http://#” for attribute “href” on element “a”: Invalid host: empty host.
Duplicate ID “header”.
Duplicate ID “navigation”.
Duplicate ID “nav”.
Duplicate ID “header-searchform”.
Duplicate ID “header-s”.
Duplicate ID “header-searchsubmit”.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
Duplicate ID “”.
Duplicate attribute “rel”.
The “frameborder” attribute on the “iframe” element is obsolete.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.
The “center” element is obsolete. Use CSS instead.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “div” seen, but there were open elements.
Unclosed element “center”.
Stray end tag “div”.
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