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HTML site verification tool...

Does W3C standardize the movement of focus when input gets hidden?...

SVG <set> tag's dur attribute does not animate...

How to preserve newlines in CDATA when generating XML?...

Is there an XHTML 5 validator?...

Getting Opacity attribute to Validate to W3C standards...

Is figure figcaption appropriate for image galleries?...

How to write spec for a new HTML tag?...

W3C and/or accepted standards for loading non-visual web page resources...

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Difference between http://jigsaw.w3.org/css-validator/ and http://www.css-validator.org/ CSS validat...

To What Self-Closing Elements Can ::before and ::after Pseudo-Elements be Applied...

How to fix IMG align="left" to be W3C valid?...

W3C compliance br tags in table...

ASP.NET - What Characters does Server.HtmlEncode Encode into Named Character Entities...

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Error with XML Validation...

Is anyone using XForms in their web applications?...

Reading special Charanters in XML org.w3c.dom...

Can I use role and aria attributes in xhtml 1.0...

What are external entities and notations in DTD?...

Appending child element from other document...

What does % mean in DTD?...

Do javascript console debugger commands follow w3c recommendation / specifications?...

ETag format w3c...

Does W3C Widget Checker work?...

Why SVG element definition in w3c always has full presentation attributes?...