Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “favicon” for attribute “rel” on element “link”: The string “favicon” is not a registered keyword.
Bad value “http://fonts.googleapis.com/css?family=Open+Sans:400italic,400,700|Roboto:400,700&subset=latin,latin-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Attribute “border” not allowed on element “iframe” at this point.
Bad value “468px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “60px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The element “iframe” must not appear as a descendant of the “a” element.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “class”.
Attribute “helper” not allowed on element “input” at this point.
The “acronym” element is obsolete. Use the “abbr” element instead.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Poland PL