Ipython.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “iframe” not allowed on element “iframe” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “180px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Element “g:plusone” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “img” is missing required attribute “src”.
Warnings:
Element name “g:plusone” cannot be represented as XML 1.0.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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