Standardspeaker.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
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.
Duplicate ID “toppencil”.
The “center” element is obsolete. Use CSS instead.
Bad value “500px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “18px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Bad value “15px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Bad value “16px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Bad value for attribute “href” on element “a”: Illegal character in fragment: “#” is not allowed.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “toppencil” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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