Warnings:
The “banner” role is unnecessary for element “header”.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “alto_contraste_id” was here.
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:
Element “div” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “header” element.
Attribute “type” not allowed on element “menu” at this point.
Element “option” without attribute “label” must not be empty.
Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).
Attribute “http-equiv” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Attribute “border” not allowed on element “input” at this point.
Element “input” is missing required attribute “alt”.
The “align” attribute on the “input” element is obsolete. Use CSS instead.
Attribute “alt” not allowed on element “a” at this point.
Element “style” not allowed as child of element “div” 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.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “350px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “alto_contraste_id”.
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