Ruru.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
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.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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