Science37.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:addthis” not allowed here.
Bad start tag in “img” in “head”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “noscript”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:addthis” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute for the “style” element is not needed and should be omitted.
The “type” attribute is unnecessary for JavaScript resources.
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