Betzona.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Table column 2 established by element “th” has no cells beginning in it.
Table columns in range 4…8 established by element “th” have no cells beginning in them.
Table columns in range 10…12 established by element “th” have no cells beginning in them.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete.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.
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