Aut.ac.ir W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
The “font” element is obsolete. Use CSS instead.
Stray end tag “div”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “205px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “255px” 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The “frameborder” attribute on the “iframe” element is obsolete.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.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “homecontent”.
The “center” element is obsolete. Use CSS instead.
Bad value “420px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
No “p” element in scope but a “p” end tag seen.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “homecontent” was here.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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