Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
Attribute “"” is not serializable as XML 1.0.
The first occurrence of ID “footer” was here.
This document appears to be written in Spanish but the “html” start tag has “lang="en"”. Consider using “lang="es"” (or variant) instead.
Errors:
Attribute “_data-target” not allowed on element “button” at this point.
Heading cannot be a child of another heading.
Stray end tag “h1”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “a” at this point.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Element “thead” not allowed as child of element “table” in this context. (Suppressing further errors from this subtree.)
Bad value “phone” for attribute “type” on element “input”.
Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.
Attribute “maxlength” is only allowed when the input type is “email”, “password”, “search”, “tel”, “text”, or “url”.
Attribute “required” is only allowed when the input type is “checkbox”, “date”, “datetime-local”, “email”, “file”, “month”, “number”, “password”, “radio”, “search”, “tel”, “text”, “time”, “url”, or “week”.
Duplicate ID “footer”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
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