Mosinzhproekt.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate ID “drop[]”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “clear” attribute on the “br” element is obsolete. Use CSS instead.
Bad value “/img/storage/publications/71/77/IS19_block_WEB финал на сайт.pdf” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
No “p” element in scope but a “p” end tag seen.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Element “noindex” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The first occurrence of ID “drop[]” was here.
This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.
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