Dwight.edu W3C HTML Markup Validation
HTML markup errors and warnings
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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The “cellspacing” attribute on the “table” element is obsolete.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The “cellpadding” attribute on the “table” element is obsolete.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.
Bad value “” for attribute “id” on element “img”: An ID must not be the empty string.
The element “header” must not appear as a descendant of the “header” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
A table row was 1 columns wide, which is less than the column count established using column markup (2).
Table column 2 established by element “col” has no cells beginning in it.
Attribute “controlslist” not allowed on element “video” at this point.
Stray end tag “source”.
Element “img” is missing required attribute “src”.
Stray end tag “img”.
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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