Easyfly.com.co W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
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).
Errors:
Bad value “text/html” for attribute “content” on element “meta”: The legacy encoding declaration did not start with “text/html;”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Attribute “asp-controller” not allowed on element “form” at this point.
Attribute “asp-action” not allowed on element “form” at this point.
Attribute “asp-antiforgery” not allowed on element “form” at this point.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
Bad value “” for attribute “name” on element “select”: Must not be empty.
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