Udlap.mx W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
The first occurrence of ID “Text1” was here.
The “type” attribute is unnecessary for JavaScript resources.
Errors:
Bad value “//fonts.googleapis.com/css?family=Lato|Montserrat|Open+Sans|Raleway|Kanit” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Element “img” is missing required attribute “src”.
Element “figcaption” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The element “button” must not appear as a descendant of the “a” element.
Duplicate ID “Text1”.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “aria-labelledby” attribute must point to an element in the same document.
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