Errors:
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.
Element “style” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
Bad value “ITAM” for attribute “rel” on element “a”: The string “ITAM” is not a registered keyword.
Duplicate ID “navbar-collapse-1”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “value” not allowed on element “div” at this point.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “content” not allowed on element “span” at this point.
Duplicate ID “filos-edu”.
Duplicate ID “button-leer”.
Stray end tag “section”.
Stray end tag “div”.
Duplicate ID “form”.
Duplicate ID “searchbox_007881988168270459385:kgryvpami9i”.
Attribute “value” not allowed on element “input” at this point.
Element “input” is missing required attribute “alt”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “navbar-collapse-1” was here.
The “banner” role is unnecessary for element “header”.
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 “filos-edu” was here.
The first occurrence of ID “button-leer” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “form” was here.
The first occurrence of ID “searchbox_007881988168270459385:kgryvpami9i” was here.
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