Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “” for attribute “href” on element “link”: Must be non-empty.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Bad value “” for attribute “size” on element “input”: The empty string is not a valid positive integer.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “header” in this context. (Suppressing further errors from this subtree.)
Attribute “nopin” not allowed on element “img” at this point.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “rel” not allowed on element “span” at this point.
Bad value for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Attribute “pubdate” not allowed on element “time” at this point.
Duplicate attribute “target”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Text run is not in Unicode Normalization Form C.
This document appears to be written in Spanish but the “html” start tag has “lang="en"”. Consider using “lang="es"” (or variant) instead.
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