Top "W3c-validation" questions

You can use W3C validation services to check HTML documents, CSS stylesheets, Atom/RSS feeds, and more.

HTML 5 w3c validation

I validated my website using validator.w3.org It reported the following error: Line 5, Column 67: Bad value X-UA-Compatible for attribute …

html internet-explorer-9 w3c-validation
W3C validation for complete site

I am working on a project where I have to validate the complete site, which has around 150 pages, through W3…

w3c-validation
W3C validation with AngularJS directives

How do we go about doing W3C validation with an Angular application? Since custom directives make for invalid HTML …

html angularjs w3c w3c-validation
XHTML Strict: br tag inside p tag

I get lots of validation errors because of <br /> inside <p>. If I remove the br …

html css w3c-validation
Using aria-sort in validated HTML5

Assuming a static HTML table, such as: <table> <thead> <tr> <th scope="col" …

html accessibility w3c-validation wai-aria
How widely supported is the iframe attribute "allowfullscreen"?

I can't seem to find any websites detailing the support for the iframe attribute "allowfullscreen". CanIUse.com doesn't seem to …

html iframe w3c-validation
Attribute name not allowed on element meta at this point

I am having the error multiple times here <meta name="description" content="Directus Media specialises in websites for small …

html w3c-validation
How can I get the WordPress language_attributes function to return valid XHTML 1.1?

I have a WordPress template that contains the following element: <html xmlns="http://www.w3.org/1999/xhtml" <?php …

php wordpress w3c-validation xml-attribute xhtml-1.1
W3C validation says h1 in article is invalid

I'm running my website through the W3C validation service. I'm getting an error message for the following HTML: <…

html w3c-validation
Invalid role attribute value for section element?

In a website I'm working on right now, I have a section element which type is set to "main". According …

html w3c-validation role wai-aria