Between curating sites for the HTML5 gallery and answering readers’ questions here at HTML5 Doctor, I see a host of HTML5 sites and their underlying markup. In this post, I’ll show you some of the mistakes and poor markup practices I often see and explain how to avoid them.

The clinic is getting busy with more HTML5 ailments! This week, we’ll cover the separation of formatting and content, custom elements, using aside for social links, sections with no visible titles, and canvas in the DOM.

The clinic is getting busy with more HTML5 ailments. This week, we’ll cover questions about aside, blogging platforms, stylesheet links, id attribute validation and a mammoth semantic journey.

We’re back with our first round up of your questions for 2010. In this article we’ll be covering a range of topics including sections and sectioning, the img element, scaling video and a proposal for a field element.

One of the new elements for HTML 5 is the <nav> element which allows you to group together links, resulting in more semantic meaning for your markup, and help help structure the content for screenreaders. In this article I’ll discuss how and where to use it as well as some reservations I have with the specifications definition.