Zulaoyun.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “img” is missing required attribute “src”.
Duplicate attribute “class”.
Heading cannot be a child of another heading.
Stray end tag “h4”.
No “p” element in scope but a “p” end tag seen.
Stray end tag “h1”.
Attribute “ng-app” not allowed on element “div” at this point.
Attribute “ng-controller” not allowed on element “div” at this point.
Attribute “ng-repeat” not allowed on element “tr” at this point.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “100%” for attribute “height” on element “iframe”: Expected a digit but saw “%” instead.
The “aria-labelledby” attribute must point to an element in the same document.
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