Dmir.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate attribute “style”.
Duplicate ID “login-btn”.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “autocomplete” is only allowed when the input type is “color”, “date”, “datetime-local”, “email”, “hidden”, “month”, “number”, “password”, “range”, “search”, “tel”, “text”, “time”, “url”, or “week”.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “a” violates nesting rules.
Warnings:
The first occurrence of ID “login-btn” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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