Polarispool.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “https://fonts.googleapis.com/css?family=Saira|Saira+Semi+Condensed” 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.
Duplicate ID “”.
Attribute “href” not allowed on element “h1” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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