Komspec.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute for the “style” element is not needed and should be omitted.
The “type” attribute is unnecessary for JavaScript resources.
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “charset” attribute on the “script” element is obsolete.
Errors:
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The element “button” must not appear as a descendant of the “a” element.
Bad value “1” for attribute “border” on element “img”: Only “0” is a permitted zero literal.
The “name” attribute on the “img” element is obsolete. Use the “id” attribute instead.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “///ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js” for attribute “src” on element “script”: Unexpected slash or backslash.
The “itemprop” attribute was specified, but the element is not a property of any item.
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