Errors:
Attribute “xmlns:og” not allowed here.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “login”.
Duplicate ID “click_self_oa”.
Duplicate ID “oAuth”.
Duplicate ID “oAuth_vkontakte”.
Duplicate ID “oAuth_mailru”.
Duplicate ID “oAuth_odnoklassniki”.
Duplicate ID “oAuth_facebook”.
Duplicate ID “loginForm”.
Duplicate ID “name”.
Duplicate ID “pass”.
Duplicate ID “alienComp”.
Duplicate ID “newUser”.
Duplicate ID “recoveryPass”.
Duplicate ID “rub_books”.
Duplicate ID “rub_lessons”.
Duplicate ID “rub_postobrabotka”.
Duplicate ID “rub_videolessons”.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
The first occurrence of ID “login” was here.
The first occurrence of ID “click_self_oa” was here.
The first occurrence of ID “oAuth” was here.
The first occurrence of ID “oAuth_vkontakte” was here.
The first occurrence of ID “oAuth_mailru” was here.
The first occurrence of ID “oAuth_odnoklassniki” was here.
The first occurrence of ID “oAuth_facebook” was here.
The first occurrence of ID “loginForm” was here.
The first occurrence of ID “name” was here.
The first occurrence of ID “pass” was here.
The first occurrence of ID “alienComp” was here.
The first occurrence of ID “newUser” was here.
The first occurrence of ID “recoveryPass” was here.
The first occurrence of ID “rub_books” was here.
The first occurrence of ID “rub_lessons” was here.
The first occurrence of ID “rub_postobrabotka” was here.
The first occurrence of ID “rub_videolessons” was here.
This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.
Russian Federation RU