Revistagastroenterologiamexico.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “logo”.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Bad value “183px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Duplicate attribute “target”.
Bad value “banner profesional” for attribute “id” on element “a”: An ID must not contain whitespace.
Stray end tag “div”.
Warnings:
The first occurrence of ID “logo” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Spanish. Consider adding “lang="es"” (or variant) to the “html” start tag.
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