WordPress uses a combination of PHP, HTML and CSS to render the appearance of a blog. If the CSS contains invalid code, the blog will fail to display as intended, as the Web browser won't understand ...

The free 3 W3C MarkUp Validation Service and 4 W3C CSS Validation Service ensure that your pages meet the exact specifications established by the W3C. The MarkUp Validation Service checks for ...

When it comes to creating your site, employing Web standards such as HTML 4, XHTML, and Cascading Style Sheets (CSS) gives you the best of all possible worlds. You ...

A recent tweet from Google’s Gary Illyes called attention to problem of invalid HTML. Google is fine with invalid HTML. Less well known is that there are negative outcomes associated with invalid HTML ...

European developer Tari has released its first application: GoodPage, an HTML/CSS tool that Web site owners can use to author and edit their documents. GoodPage offers WYSIWYG (what you see is what ...

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing. Every developer has been in the situation where ...

The free 3 W3C MarkUp Validation Service and 4 W3C CSS Validation Service ensure that your pages meet the exact specifications established by the W3C. The MarkUp Validation Service checks for ...