Neatmethod.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “” was here.
The “contentinfo” role is unnecessary for element “footer”.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
Attribute “alt” 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.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “”.
Bad value “colorbox_instagram” for attribute “rel” on element “a”: The string “colorbox_instagram” is not a registered keyword.
Text not allowed in element “iframe” in this context.
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