Sitenable.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “class"btn"” not allowed on element “a” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Duplicate ID “nav”.
Duplicate ID “install-button”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
The “charset” attribute on the “script” element is obsolete.
Attribute “class"btn"” is not serializable as XML 1.0.
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “nav” was here.
The first occurrence of ID “install-button” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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